
At the beginning of each end step, if it's an opponent's turn, put a +1/+1 counter on this creature for each 1 damage dealt to you this turn.
At the beginning of your end step, remove all +1/+1 counters from this creature.
Illustrated by Alan Rabinowitz · Mirage · #261
2006-05-01
In Two-Headed Giant, triggers only once per end of turn, not once for each player.
2004-10-04
This will not count damage that was prevented.