this guide will be discussing ,as you may have noticed,the way i personally build Cassiopeia my ,by far,favorite mage,with one of the most underrated ultimates of league of legends.moreover she is able to spam a 200+damage spell over an extremely low amount of time(0.5sec) with an extremely low amount of mana spent ,which makes her a dangerous nuke for the enemy team.Moreover not only does she spam skills to farm and harass,but due to her passive she has the ability to sustain herself on lane whereas other champions would need to recall for at least 2 times.Due to this reason, Cassiopeia players often find themselves having a level advantage.finally she is able to handle both solo and 1v2 lane.

what u should
Flash-what is better than a free arcane swift :D
Ghost-u really need escaping/chasing spells rather than aggressive spells like Igniteand Exhaust
-what u could-
Clairvoyance-great for support if your team doesnt have a support and noone else picks it take it with Flash
Ignite-good to get first blood
Exhaust-although it requires you to stay in "dead range" in order to use it(very close),it can ensure a kill or to joke an enemy that he can kill you

-what god didn't intend to-
Heal->NEXT
Revive->NEXT
Rally->leave it to the tank/support
Clarity->although not that terrible you have enough mana reg and passive
Fortify->again,leave it to tank/support
Cleanse->not that bad,but if you are careful, u wont need it
Teleport->if u solo top,but u shouldn't,yes u can go with teleport

Greater Mark of Magic Penetration
Greater Seal of Ability Power
Greater Glyph of Ability Power
Greater quintessences of potency

the reason why i choose full ability power runes,is because she is one of the few champions who don't really require mana regeneration runes while your mastery setup will cover most of the mana issues.those flat ap runes will give you the edge u need early in the game enabling to extinguish at least 1/8 of the enemies' mid health bar(with dorans),only at level 1

pros-why i freaking love the phrase "you have slained an enemy"
±one of the most early to late game casters
±great burst(combo of and ), aoe damage and dot damage
±can kill in a matter of seconds
±great threat for the enemy team
±freaking sexy voice ingame
±great chaser
±fabulous sustainability doe to
±can farm from a range
±great farmer

cons-"and there is a catch..."
§squishy
§aimed 1st usually in team-fights
§requires a good tank and offtank in order to get the perfect lineup to use her ultimate
§if u want to be successful from dawn to sunset u need not to fall behind with your expensive build
§ultimate can be buggy sometimes
§hard to learn even harder to master,but very,very rewarding

#did you know that by rapidly clicking your q over its range,it can cancel the spell cast, so that when u chase someone,it will only fire when it can reach him;

#she can easily anti carry the enemy carry in team fights, while she will force it get out of position

#can jungle blue really fast at levels 5-6(WARNING:U WILL NEED TO RECALL)

#when your rival in mid has low hp and refuses to go back to base,u can easily scare it away when attacking the enemy turret by casting your q almost next to him so that he will stay away from you unable to attack you,cause he will risk to die

While her sister Katarina has always been the most celebrated member of the household, the Du Couteau family has a long history of service to Noxus. It has often been said that no soldier has ever been as fortunate as General Du Couteau to have been graced with daughters. His youngest, Cassiopeia - despite lacking her sister's killer instincts - was equally renowned in court for her stately character and elegance. Cunning as she was beautiful, the temptress could never be found far from the arm of any foreign dignitary, her wiles prying secrets from the lips of even the most wary attach�. With the Noxian barbarian pacification campaign having ground to a standstill, Cassiopeia had set her sights on a diplomat from a tribe of the Freljord region. Thinking him an easy mark, the scheming seductress set about beguiling him. He refused to confide in her, however, until she swore an oath of secrecy upon his sword - a strange weapon with a serpentine curve to the blade.

Once her tryst was over, Cassiopeia provisioned her father with information regarding the barbarian resistance. As she divulged this intelligence, a wave of revulsion washed over her. She screamed in agony as her silky skin hardened to scales, her lustrous hair thickened to leather, and her manicured fingernails sharpened to claws. Dazed, she fell upon a group of horrified servants, rending them limb from limb in a heartbeat. When it was over the blood-soaked figure was no longer the ravishing jewel of the Noxian court, but a horror trapped somewhere between woman and serpent. Unable to serve in her traditional capacity, Cassiopeia departed for the League, continuing her service to Noxus on the Fields of Justice.

''Though she may have appeared the innocent flower, she was the serpent under it.'' - Katarina, the Sinister Blade

Noxious BlastCassiopeia blasts an area with a delayed high damaging poison, dealing 75/115/155/195/235 (+0.9) magic damage over 3/3/3/3/3 seconds and granting her 15/17.5/20/22.5/25% Movement Speed for 3/3/3/3/3 seconds if she hits a champion.the more you play Cassiopeia,the more you will get better in aiming with this spell

MiasmaCassiopeia releases a growing cloud of poison that lasts for 7/7/7/7/7 seconds. Any enemy that passes through it is poisoned for 2/2/2/2/2 seconds, dealing 25/35/45/55/65 (+0.15) magic damage each second and slowing them by 15/20/25/30/35%. Continual exposure renews this poison.

Twin FangCassiopeia deals 60/95/130/165/200 (+0.55) magic damage to her target. If the target is poisoned then Twin Fang's cooldown is reduced to 0.5/0.5/0.5/0.5/0.5 seconds.SPAM SPAM AND AGAIN SPAMM

Petrifying GazeCassiopeia deals 200/325/450 (+0.6) magic damage to all enemies in front of her. Enemies facing her are stunned for 2/2/2 seconds while enemies facing away are slowed by 60/60/60%.the underrated ultimate which changes the outcome of teamfights(if used correctly)

Deadly CadenceAfter casting a spell any subsequent spellcasts will cost 10% less for 5 seconds. This ability stacks up to 5 times.-such an awesome passive,makes you spamm abilities like a beast

u should always start with a doran's ring no matter the situation,it gives you everything u need in order to stay in the lane till you have either 750g or 2095g. OR .After that start building your .After that by pushing your lane and committing in team fights should make u get enough g to complete your build

the reason i tend to buy a is because i often find my self with full mana and low hp,so i go to jungle in a matter of seconds my hp is back up again.it can also save you in 1v1s due to the spellvamp of your spamming Twin Fang

early game:start with your and head for mid lane.try to play defensively by harassing and backing.NOTE:FARM IS YOUR 1ST PRIORITY
when you reach level 6 try to combo by Flash> Petrifying Gaze> Noxious Blast> Twin Fang(note:u must STUN with your ultimate not slow,if u slow he is most likely to flash away)

mid game:By now you should have abused the other lanes by ganging them all the time.but remember to kill all jungle camps in your way.By now,your build should look like this:

late game:your build should look like this: .If you are doing extremely well late game then your items should look like this icon=Archangel's staff size=64]

that item will scale off all your all your ability power into basic attacks making you extremely powerful after using each spell with a basic attack following.the speed boost is also nice.

now to be honest,i ever really liked this item,if you think you can do well with it then congarts to you.now you have 2 options:either keeping Catalyst the Protectorwith or replacing with Catalyst the Protector

extremely well versus very tanky teams due to passive

any thoughts for other items?

take your time and explain o your team that you need 2 other team members to start the fight,so that u can safely get into range and use your ultimate,late game,the damage is insane!!!!!it can melt half of any squishy champion in to half.other than that, stay behind your tank and offtank so that u will use your ultimate in the very start of the fight

ok, only one explanation to make,early in the game ,ranged creeps require 3 Noxious Blast try to that to each creep waves

when playing ranked games,you can either solo top(towerhug all time if its 1v2)or go solo mid
your mid does not differ a lot although you should take summ. spell teleport just in case you solo top.