GAREN, Limits Broken

Hexproof
Rally-Whenever I transform or another Ally
enters the battlefield under your control, place a
+1/+1 counter on all other Allies you control.
I may Block any number of creatures.
When I defeat a creature in combat, place a
Judgement Counter on me; You may remove 8 Judgement Counters from me to deal X damage
to all opponents' creatures, where X equals
my power.