Help Support

Our Growing Community

MOBAFire is a community that lives to help every LoL player take their game to the next level by having open access to all our tools and resources. Please consider supporting us by whitelisting us in your ad blocker!

Want to support MOBAFire with an ad-free experience? You can support us ad-free for less than $1 a month!

Go Ad-Free
Mobafire League of Legends Build Guides Mobafire League of Legends Build Guides

Cassiopeia Build Guide by Yeager

Middle diamond

Yeager's Master Cassiopeia Guide

By Yeager | Updated on December 11, 2019
1,319,955 Views
486 Votes
13 Comments
x
Did this guide help you? If so please give them a vote or leave a comment. You can even win prizes by doing so!
Vote
Comment

You must be logged in to comment. Please login or register.

I liked this Guide
I didn't like this Guide
Commenting is required to vote!

Thank You!

Your votes and comments encourage our guide authors to continue
creating helpful guides for the League of Legends community.

Yeager's Featured Video
Close

Choose Champion Build:

  • LoL Champion: Cassiopeia
    Cassiopeia
  • LoL Champion: Cassiopeia
    Arcane Comet Cassiopeia PRESEASON 9 meta

Runes: Phase rush

1 2
Sorcery
Phase Rush
Manaflow Band
Transcendence
Gathering Storm

Domination
Taste of Blood
Ravenous Hunter
Bonus:

+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+6 Armor

Spells:

1 2
Aggressive setup
LoL Summoner Spell: Flash

Flash

LoL Summoner Spell: Ignite

Ignite

LeagueSpy Logo
Middle Lane
Ranked #24 in
Middle Lane
Win 53%
Get More Stats

Threats & Synergies

Threats Synergies
Extreme Major Even Minor Tiny
Show All
None Low Ok Strong Ideal
Extreme Threats
Ideal Synergies

Introduction



Hi guys! Welcome to my Cassiopeia guide! My name is Mayu, but in the lol community i'm known as Yeager. I'm a affiliated streamer and high elo midlaner/adc in league. I started playing league at the end of season 3. I finished in Platinum 5 in my first season of ranked, Diamond 1 seasons 5-6. At the start of season 7 i decided to take a break so i could focus on studying. 8 months after i returned to league and climbed to Master tier in soloqueue and challenger in flex.

This guide is made for the purpose of sharing what i have learned from playing against diamond, master and challenger players in soloqueue. I understand that not everyone might agree with the builds/runes, as there are many different ways you can build Cassiopeia, but this build has given me the most success on the ranked ladder, so that's why i stick to it. Hopefully this guide will improve your Cassiopeia gameplay and let you climb the ranks faster!





Here's the latest champion guide i created for Orianna. If you're interested in picking her up, i recommend watching this video:
Back to Top

Pros and Cons



Pros


+ Insane DPS
+ Huge outplay potential
+ 6-item lategame scaling
+ Very rewarding



Cassiopeia has been among the strongest midlaners since item changes was introduced to mages. She has insane DPS and full 6-item lategame scaling thanks to her passive. It's a champion that will reward you based on your skill level, so you can always be relevant with her even when she's out of meta. If you invest time into learning this champion, you will find yourself climbing the ranked ladder much faster.
Cons


- Immobile
- Mana hungry early game
- VERY High skillcap
- Short range


Cassiopeia's biggest weakness is her immobility and short range, making her weak into teamcomps with long-range abilities and strong disengage. She also has some manaproblems early on until you get Tear of the Goddess and Lost Chapter, so spamming abilities without managing your mana can cost you the entire laning phase. Due to her high skill-cap, it's a champion that can't be mastered from just 30 games, she needs lots of time and practice.
Back to Top

Summoner Spells



Flash Is a must-grab on mages like Cassiopeia because you're really squishy and require solid positioning. She does not have any built-in dash/jump, so 1 wrong move in teamfights can cost you a lot. Flash also enables the flash-ult combo.

Heal Used to be the standard summoner for most mages. It heals you and a nearby teammate, so if you are planning to skirmish a lot with your jungler, this is a viable option.

Ignite The go-to summoner for having kill pressure in lane. I use this one most of the time as it fits my super-aggressive playstyle, letting me grab some solokills in lane to scale faster, and take over the game.

Cleanse Underrated spell. If you are playing against a heavy CC mid + jungler, then you want Cleanse for sure. The benefit of having cleanse is the fact that you don't need to use a item slot on Quicksilver Sash, and can instead focus on buying your core items.

Exhaust This helps a lot against champions that rely on burst damage to finish you off. Champions this can be good into, are something like Fizz, Zed, Rengar, Talon, Ekko. Having Exhaust also makes your 1v1 splitpushing much stronger.

Barrier The more selfish summoner spell compared to Heal. It has lower CD and is a much safer pick against opponents with Ignite.

Ghost This used to be the best secondary summoner spell for Cassiopeia because it covered all her weaknesses. Due to the nerfs it's no longer a top-tier summoner, but it can still work in some situations.
Back to Top

Runes




Keystone
  • Phase Rush: This is without a doubt the best keystone for Cassiopeia. It covers one of her main weaknesses - being immobile. She can chase, escape and kite better with the movement speed, and slow resistance from Phase Rush. This is the absolute best keystone on Cassiopeia.


Tier 1
  • Manaflow Band: When fully stacked, we permanently get 250 bonus mana and a passive that restores 1% of missing mana every 5 seconds. It's not that great early game, but from mid game it can help a lot since Cassiopeia is very mana hungry.


Tier 2
  • Transcendence: CDR is super important on Cassiopeia as she is a DPS mage that relies on spamming abilities. Her twin fangs needs a certain amount of CDR before she reaches the state of "machine gun cassio"


Tier 3
  • Gathering Storm: Weak early on, but slowly ramps up. From minute 30 you will start noticing the difference this rune can make. Sometimes your team will get a huge lead, but since it's soloq, they will most likely fail to close out the game. This rune is basically the late-game insurance in case everything goes wrong.
    Alternative rune: Scorch is a early game focused rune that gives you more kill pressure in lane. If you are planning to carry the game by farming the enemy midlaner, this is without a doubt the best option with Ignite as you have way more kill potential in lane as Gathering Storm won't really kick in until 30 minutes.


Tier 1
  • Taste of Blood: The extra sustain from this rune can help us stay in lane longer and get our core items. It also helps when trading as you get some HP back.


Tier 2
  • Ravenous Hunter: This is one of the best lower tier runes from the Domination tree. The amount of healing you get lategame is just insane, especially because her Twin Fang is single-target with low cooldown, so you get the FULL healing from this rune. This combined with her built-in sustain, will get you back to max HP in no time.
Back to Top

Abilities




PASSIVE
ABILITY
Serpentine Grace (Passive): Cassiopeia gains Movement Speed per level, but she cannot purchase Boots items.




Q
Noxious Blast (Q): Cassiopeia blasts an area with Poison after a brief delay, granting her increased Movement Speed if she hits an enemy champion.




W
Miasma (W): Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.




E
Twing Fang (E): Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.




R
Petrifying Gaze (R): Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.






Ability Sequence
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18




Twin Fang is maxed first as this is our bread and butter ability. It's our main source of damage and sustain, but it's also used to farm creeps since it refunds mana every time you last-hit a unit with it.

Noxious Blast is maxed second. This is where the great chase-potential comes in for Cassiopeia as it gives movement speed when you hit a champion. It's great for poking and kiting champions while shredding them fast with Twin Fang.

Petrifying Gaze is maxed third. Great ultimate that allows Cassiopeia to solocarry in teamfights. We put a point in this whenever we can for the lower cooldown and more base damage.

Miasma is maxed fourth and last. We only put a point in this ability early to have the slow + grounding effect so we can stop mobile targets and lock them in place.
Back to Top

Items




Doran's Ring
  • Doran's Ring: Solid starting item for most mages as it gives a decent amount of HP, AP and mana regen. This is rarely bought over Corrupting Potion on Cassiopeia but if you won't be interacting with your lanter at all, then this is a decent option.


Corrupting Potion
  • Corrupting Potion: This is the most bought starting on Cassiopeia because of the sustain and early-game dueling potential. Having this item means that you will never have to buy Health Potions so you already save a lot of gold.


Control Ward






Core items
-
Archangel's staff: Cassio is very mana hungry so a big manapool is required in order for her to spam abilities. She has absolute no problems stacking the Tear of the Goddess as she can spam her Twin Fang and get all the mana refunded + additional mana thanks to the passives. The 20% CDR is super important to lower the cooldown on Twin Fang. We also get a decent amount of AP, and a big shield when upgraded into Seraph's Embrace.
Rylai's Crystal Scepter: Great synergy with her entire kit. The slow makes it so much easier to land your abilities, but that's not all of it! Her ability to kite and reposition are improved 3x with Rylai's Crystal Scepter and Phase Rush, as almost noone will be able to stop you if played correctly. This item is even better if you buy Liandry's Torment right after for the synergy.
Liandry's Torment: Cassiopeia is the absolute best user of this item. The madness passive of this item is amazing on Cassiopeia because she's a mage with consistent DPS, so she can fully utilize this during fights, especially with the poison ticks that will keep this passive up. The torment passive has great synergy with Rylai's Crystal Scepter because it impairs movement, so you will always be dealing bonus 2.5% maximum health damage. The damage part is obviously amazing, but having 2 core items that also gives her a lot of health, makes her tankier and harder to kill.
Rabadon's Deathcap: Simply the best lategame AP item in the game. It synergizes very well with all mages, but even better on hyperscaling ones like Cassiopeia because she can build 6 full items, giving you an insane amount of stats lategame. Normally this is bought as 4th or 5th item, but it all depends on the enemies you are against, and their builds.
Void Staff: People usually start stacking magic resist in the midgame so we need some magic pen to stay relevant.



  • Morellonomicon: Buy this against heavy healing opponents like Swain, Vladimir, Soraka and so on. This is also really good against ADCs because you can counter their self-healing from lifesteal items.

  • Banshee's Veil: Provides some some CDR and AP which Cassiopeia loves to have, but it also gives MR and a spellshield for "flashy" champions. I buy this against for example AP Gragas and Annie, because they rely on catching people off-guard with Flash+combo. This item counters them completely.


  • Rod of Ages: Super cost-efficient item when stacked. It will delay Cassiopeia's scaling, but it will make her lategame much stronger. The reason i don't use this very often right now, is because i want more impact "early-midgame". We are in a meta where it's all about having lane priority so the mid game is really important.

  • Quicksilver Sash: This is a must-buy against Malzahar and Skarner, as it is the only item that cancels Suppression. I only buy this item to counter Suppression - for everything else you should get Cleanse, so you don't have to use up a item slot.
Back to Top

Gameplay



In the early game you may have to play a bit more passive against some of the meta picks. Cassiopeia is really mana hungry until she gets tear, so you should avoid extended trades unless the target is within kill range. Use your Twin Fang to last-hit creeps and keep the wave at your side, so you can avoid getting ganked by the enemy jungler. Your main goal in the early game, is to have enough gold for Tear of the Goddess and a Control Ward. Once you have enough gold, you should shove in the wave OR freeze it, and base for your items.

When you have Tear of the Goddess you should always use Twin Fang to last-hit creeps so we can get some free mana and stacks. Since we now have a mana item, we can afford to play a bit more aggressive. If the enemy is overextended, you should go for trades with Noxious Blast + Twin Fang as she can shred people really fast, and often they won't be able to trade back because of her DPS, and the mobility she gets from Phase Rush.

Enemy junglers often camp Cassiopeia because she has no mobility. You can play aggressive if you have proper vision, but you still need to be aware of possible ganks. Always have a Control Ward in one side of the lane, and play around your vision.

At this point you should have at least Seraph's Embrace and Rylai's Crystal Scepter. If the enemy is not respecting you, you can play super aggressive and look for kills with Ignite. For a almost guaranteed hit, you should wait using Noxious Blast until the enemy midlaner stops to auto-attack a minion, and then run them down. There are not many midlaners that can match Cassiopeia's DPS at this stage of the game, so don't be scared of taking trades.

If the enemy midlaner is playing too passive, you should just shove in the wave fast and look for roams, or stealing away objectives/enemy jungle camps. Cassiopeia can kill dragons really fast with her insane DPS.

If you somehow end up on the losing team, don't lose focus because Cassiopeia outscales most midlaners lategame! Try stalling the game by clearing waves with your team until you are strong enough to carry. People always make mistakes when they are ahead because 1. They think it's won and lose focus and/or 2. They don't know how to close out the game. When they keep making mistakes and get punished for it, they will eventually get tilted, and that's when you can turn the game and make a comeback.
Late game is where Cassiopeia truly shines. For a mage, she has unmatched single-target DPS that will shred anyone who's within range. She also outscales most champions because she can build 6 full damage items! Late game for Cassiopeia is all about objectives and teamfights. As Cassiopeia you pretty much want to be constantly grouping with your team at this stage of the game. You can still go to other lanes to pick up big waves, but you should avoid splitpushing most of the time.

The way you play cassio in teamfights is the same as most other mages. You need to stay with the backline because you're incredibly squishy. Use your Miasma and Petrifying Gaze on the enemy frontline to lock them up, so they won't be able to use any mobility spells. The good thing about Cassiopeia is the fact that she shreds tanks REALLY FAST due to her insane DPS. Twin Fang.

Keep looking for opportunities where you can take big objectives like baron and elder drake . Cassiopeia can shred them really fast, so you must take advantage of this by constantly clearing out enemy wards and hovering around objectives.
Back to Top

Tips & Tricks



Noxious Blast
- can be used to check bushes for targets. If you get movement speed when using it, it means a champion is there.
- The ability has a small day. Try predict where the opponent is moving before you use it.

Miasma
- Enemies who are caught in this won't be able to use flash or other movement abilities. Use this to lock down high-mobile targets before you unleash your full combo.
- Has a minimum cast range, so it can't be used in melee range.
- You can W + flash

Twin Fang
- The ability deals more damage on poisoned targets. This includes the poison from champions like Teemo, Twitch and Singed.
- Make sure to almost move around and not stand still while using Twin Fang. Doing this helps you dodge abilities and reposition better for your next Noxious Blast.

Petrifying Gaze
- The first basic trick on Cassiopeia is the Petrifying Gaze + Flash. It's the same as other ability + flash tricks where you ult in the direction you want, and then flash right after the cast time. This will catch a lot of people off-guard and can net you a lot of solokills.
Back to Top

Wave Control



What does it mean to freeze and how do i do it?


Freezing is a advanced technique that lets you deny your opponent exp and cs if done correctly. Freezing a lane means that you kite/tank the minions without letting your tower hit the creeps. You need to make sure the enemy minions always beat yours. After the enemy killed your entire wave, you let 2-3 of the enemy creeps live, and kite them until the next wave is here. When the next wave arrives, the wave will freeze right outside of your turret range.

By doing this, you are safe from jungle ganks, while your opponent takes a big risk everytime he overextends for a cs.

When to freeze the wave


You can Freeze the wave when you and the enemy are even or ahead, and it can be used to help you win back the lane after you screwed up and died. You can attempt to freeze the wave already from level 1, leaving your opponent vulnerable to jungle ganks or be within your kill range, if you are able to kill them. When you get a lead, and you can solokill an overextended enemy laner, that is exactly when you want to freeze the wave. You force the enemy midlaner to either be in your kill range, or miss a ton of cs and exp, putting them further behind.

Freezing a wave is a great way to snowball a lead, if you have no objectives to fight for, such as dragon, herald or towers.

Here is a youtube video that explains wave management very well. I recommend watching the entire video. All credits for this video goes to Blitz Esports LoL


Back to Top

Conclusion



That's it for my Cassiopeia guide. Thank you so much for reading it, i hope you found the guide helpful. If you still have questions, feel free to post them in the comments, or on my stream and i will get back to you ASAP!

Also, if you don't mind:
- Voting on this guide would really mean a lot for me, and help me to improve it.
- Leaving a comment with feedback/suggestions is also very much appreciated.

League of Legends Build Guide Author Yeager
Yeager Cassiopeia Guide
Support
Yeager's Master Cassiopeia Guide