Edge of Night seems far too abusable right now

Seen it on a Yi, seen it on a Darius, and seen it on ADCs. This item needs to be looked at because it's getting poached by non-assassin classes, and that probably means it's too strong.

For one, the cooldown on its effect is too fast for such a good effect. Basically it prevents many mages from actually retaliating against you once you've dived in, while providing firepower to the attacker at the same time (Banshee doesn't provide firepower, which was a drawback to getting it). Take Lux for instance; what can she do against a spell shield if she can't use her Q to stop her attacker? Other than die, very little, because she can't wait it out before she's dead. And once she's downed, she comes back out of base and gets slaughtered again in the same way. OPPRESSION!

Also, 10-second duration on something that should be tactfully-timed? That seems like it's giving players too much margin for error. Lower the duration to at most 5 seconds, and then players have to actually time it right. Separates good players from bad players (I won't say "good from great").

But even if I'm going to get downvoted like crazy because "git gud", Riot, you need to look at the item and see if it might need adjusting.