Hey guys, I am MattyHayden (Summoner Name: MattyHaydos. Summoner Level: 30). This is my first guide on MOBAFIRE and hopefully everyone thinks it's good. Feel free to down-vote this guide but please give me a reason why you did. Before you down-vote this guide, though, at least try it and give me some tips on how to make it better. Also try to modify the build to suit your needs in-game. Since this is my first guide I don't know how to use some of the features when making a guide so a few tips may be helpful. Thank you for choosing to view my guide and I hope you like it!

Pros

+ Hard to counter
+ Has an in-built lifesteal
+ Her Q refreshes when you kill something with it
+ Hard to kill when she has the right items
+ Easy to farm with
+ Fun to play

Cons

- Item dependant
- Needs to farm a lot early game
- Melee champion

Ionian Fervor
Reduces the duration of stuns, slows, taunts, fears, snares, immobilizes, blinds and silences for each nearby enemy champion.
1 Champion: 10%
2 Champions: 25%
3 Champions: 40%

This is Irelia's passive ability. It reduces the durations of Crowd Control effects. It is like an in-built tenacity so it is very useful.

Bladesurge
Irelia dashes forward to strike her target for 20 / 50 / 80 / 110 / 140 (+1 per Attack Damage) physical damage. This applies on-hit effects. If it kills the target, Bladesurge's cooldown refreshes and refunds 35 Mana.

This is Irelia's Q ability. Irelia dashes toward the targeted unit. If it kills the unit, the cooldown refreshes and refunds 35 mana.

Hiten Style
Irelia is skilled in the art of Hiten, passively giving her physical attacks 5 / 7 / 9 / 11 / 13 health restoration. Activating Hiten Style doubles the health restoration to 10 / 14 / 18 / 22 / 26 and adds 15 / 30 / 45 / 60 / 75 true damage to her physical attacks for 6 seconds.

This is Irelia's W ability. passively gives Irelia up to 13 health restoration. When activated it doubles the health restoration and adds up to 75 true damage to Irelia's attacks for 6 seconds.

Equilibrium Strike
Irelia's attack balances the scales, dealing 80 / 130 / 180 / 230 / 280 (+50% of ability power) damage and slowing the target by 60% for 1 / 1.25 / 1.5 / 1.75 / 2 second(s). However, if the target has a higher Health % than Irelia, then the blow stuns the target for 1 / 1.25 / 1.5 / 1.75 / 2 second(s) instead.

This is Irelia's E ability. Irelia deals an amount of magic damage to a target enemy unit while slowing it for up to 2 seconds. If the target has a higher percentage of health, instead of slowing the target it will stun it for the same duration as the slow.

Transcendent Blades
Irelia summons 4 spirit blades which she can fling at her enemies. These blades deal 80 / 120 / 160 (+50% of ability power) (+0.6 per bonus attack damage) physical damage to enemies that they pass through, and she heals for 25% of that damage vs champions and 10% vs minions.

This is Irelia's R or Ultimate ability. Irelia can activate this ability up to 4 times dealing a large amount of physical damage to any enemy hit. She heals for 25% of the damage done to champions and 10% of the damage done to minions.

For Runes I pick Scaling Attack Damage Seals, Scaling Ability Power Marks and Attack Speed Glyphs and Quintessences when I play damage Irelia.

When I play tanky Irelia, however, I pick Scaling Health Seals and Marks, Scaling Magic resist Glyphs, and Scaling Armor and Health Quintessences.

When I play damage Irelia I take 21 points in Offence, 9 points in Defence and 0 in Utility.

OFFENCE
1/1 4/4 4/4 0/2
4/4 0/4 0/1
0/3 1/1 0/1
2/2 0/2 0/3 0/1
1/1 3/3 0/4
1/1

DEFENCE
0/1 0/3 4/4 0/2
2/3 2/3 0/1
0/2 0/2 1/1 0/1

When I play tanky Irelia I take 8 points in Offence, 22 Points in Defence and 0 in Utility.

OFFENCE
0/1 4/4 4/4 0/2

DEFENCE
0/1 0/3 4/4 0/2
2/3 2/3 0/1
2/2 2/2 1/1 1/1
1/1 0/3 3/3
0/1 3/3 0/1 0/1
1/1

For Summoner Spells I choose out of these 3 Spells:Ignite
Exhaust
Flash

I would not recommend these Spells but they could be good:
Ghost
Teleport

These Spells should not be used at all because they're just terrible on Irelia:
Revive
Surge
Heal
Cleanse
Clarity
Clairvoyance
Barrier

I would choose Ignite because it is very useful for securing kills so you don't have to tower dive.

Exhaust is another good spell to choose because it slows the enemy's attack speed and movement speed down by a lot and reduces it's attack damage.

Flash is one of the best Summoner Spells in the game because it can be used for both engaging and escaping.

Ghost is a nice choice too because you can catch up to enemies who are fleeing from a fight. It gives you bonus movement speed by about 27% and you ignore unit collision.

Teleport can be useful if you love to gank by teleporting to a ward in bot or mid. It is also perfect for getting back to your lane quickly if your turret is about to be destroyed. It is a great spell with an unfortunately long cooldown.

Smite would be a good option if you were jungling as Irelia but I rarely ever see a jungling Irelia.

Surge... All Surge ever did for you was increase your attack speed and ability power. Some of Irelia's abilities use AP but unfortunately does not have very high AP ratios.

Revive is just completely terrible. That is all I am going to say about it.

Cleanse is a nice spell to have on an ADC but I don't think it would be very useful on Irelia as she has in-built tenacity which is pretty much the same thing.

Clairvoyance is a great spell on a Support champion like Sona or Soraka but as Irelia isn't a support champion I wouldn't recommend it.

Barrier was always good in ARAM games and for some reason RIOT thought of putting it into the list of Summoner's Rift spells. It gives a shield which takes a lot of damage ( Of course depending on your champion level).

Heal used to be very overpowered but since RIOT nerfed it, Heal has just been a very awful spell to me.

Clarity refreshes your mana depending on your champion level but personally I don't think it is a good replacement for Ignite, Flash or Exhaust.

So this is the end of my first guide. I will try to update it whenever I have time. Hope you liked it and as I said in the introduction, feel free to down-vote this guide and leave a comment about why you down-voted it. Thank you very much for viewing and voting on my guide!!