[Nexus Blitz] Isn't the ace in the hole buff way too strong?

If a team gets the buff early on the game it's pretty much a secured win, it deals a lot of damage to low level champions and has little to none counter play. If an enemy turret marks you there is no way to avoid it except for killing the turret or having a Yasuo.

Either make some of the rewards only obtainable after some time into the game, like 3rd or 4th event or nerf the damn thing. [zombie-brand-mindblown]