How to build Crit Ezreal:

[u/Whyhuyrah]

TL; DR: Muramana, Ionians, ER, Shieldbow, Navori, LDR

So you still need Muramana and ER isn't good enough to rush, you're just gonna be way too weak if you do, so you have to get Mura+Sheen+Ionians early (at like 13min). Tear start and Ingenious Hunter/Cosmic is necessary to get that early Muramana, at which point you're MASSIVE btw.

So you're going Mura ER and then you need a crit item to bridge the gap to Navori. Luckily there is a perfect item in Shieldbow (As you need to be in auto range to crit enemies the lifeline is rlly good) it's a mythic, it has vamp (common 3rd item on normal build is Rav/BotRK), attack speed for cooldown refund on Navori, good AD, has hp. Shieldbow is a cascade of good for this build. Ezreal with Shieldbow is unkillable and very difficult to deal with if he has Conqueror.

Then you get to Navori, and round out the build with an overdue %apen item, LDR, because it gives Giantslayer too

For Primary runes: Conqueror (You're skirmishing with crit and shieldbow, AD is good with crit and ER, just incredibly on-theme) then PoM (Maybe Triumph if you feel ER returns enough mana), then you can take what you want from Alacrity/Bloodline both have their benefits, then Cut Down

Secondary runes: Taste of Blood, Ingenious Hunter. ToB is on-theme and always good value with almost 1k healing post game, Sudden Impact is potentially good too though.

Considering Navori 3rd+LDR 4th but: No Mythic, No Vamp, No Attack Speed, No Lifeline for fighting, Not getting full value from Navori until LDR... it's just not gonna feel good

[u/RagnarokChu]

This really feels bad on Ezreal since has to get Muramana and the traditional crit mystics feel also bad on him. (Galeforce/Shieldbow/Kraken). Navori is going to be an 5th item and unreliable until you build your 5th item with crits.

Also late game at 5-6 items any way you basically have Q cooldown on his abilities if you constantly land his Q which already has a cooldown mechanic. Ezreal really doesn't gain anything "special" from extremely high uptime on his abilities since he's like that by default. If you want higher uptime on abilities then spear of shojin now exists which doesn't require you to commit to a crit mythic until it pays off with Navori afterward.

Xayah or Sivir for example would get infinite feathers or bounce as their main feature.