Blood Hound
{2}{R}
Creature -- Dog
1/1
Whenever you're dealt damage, you may put that many +1/+1 counters on ~this~.
At the beginning of your end step, remove all +1/+1 counters from ~this~.
Retaliator Griffin
{1}{R}{G}{W}
Creature -- Griffin
2/2
Flying
Whenever a source an opponent controls deals damage to you, you may put that many +1/+1 counters on ~this~.