Many-Headed Hydra

Haste, Triple Strike
Heads ( Many-Headed Hydra enters the battlefield
with 5 head counters on it. Each head counter gives it
+1/+1. If it has no head counters on it, it dies.
Otherwise it is indestructible. Whenever it takes
combat damage, it gains 1 head counter for each
creature damaging it unless it has taken damage from
an instant or sorcery spell this turn. If it has, it loses 1
head counter for each creature damaging it. )