Talk:Jinx/@comment-5015210-20160928211243/@comment-8506165-20161009055805

ER isn't core on Jinx by any stretch of the imagination. It's AD and crit chance, sure, but... you shouldn't really have mana issues late game even though you are just rocketing in teamfights, and you're not a cooldown based champion but a pure autoattacker, so both of the passives are rather wasted on Jinx.

If you really want a high crit build, then IE and two Zeal upgrades is the standard, for 80%. It's still a little greedy, because you still need a lifesteal item, boots, and a Last Whisper upgrade, which means you have no room left for a pure defensive choice. Maybe you could buy ER in a game where the enemy isn't building any armour in place of your Last Whisper, but if you're fed enough to buy four crit items and safe enough to ignore defensive items in a game where the enemy's inexplicably refusing to buy armour then that should just be a free game anyway. You could honestly buy a Rabadon's and still win if the game's going that well for you. If you are really obsessed with reaching 100% crit then I'd just build 50% and ask your support to get a Zeke's to bump you up to 100%. But honestly, Jinx does so much damage that 100% really isn't a requirement.