Talk:Alistar/@comment-25320798-20170325013901/@comment-4022742-20170426160108

The static cooldown is there so that he can't immediately start stacking again.

Stuns and displacements add stacks too, just like minions. So being at 5 stacks and stunning 4 people will end you with 0 stacks, if the cooldown wasn't there it'd be straight back to 2. This would increase his heals per game and result in a need to lower the numbers he heals for or increase the stacks needed to activate it.

TL:DR; It's for balance reasons.