Harry Stamper

Whenever another human enters the battlefield,
put a Hero counter on Harry Stamper. (Creatures
get +1/+1 for each Hero counter)
You may move any number of Hero counters
from Harry Stamper to target creature at the beginning of your upkeep.
{t} Remove 3 Hero counters and sacrifice Harry
Stamper. Creatures you control gain indestructible until your next upkeep.