Howling Moon

Enchant creature
Enchanted creature gains 3 counters. At the beginning of your upkeep, remove a counter.
While enchanted creature has at least 1 counter
on it, it gains +1/+0, first strike, and berserk.
When enchanted creature has no counters,
discard Howling Moon.
"I am Nanaki, son of Seto... I am afraid of nothing!"