Discordant Spirit

Creature — Spirit

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.

Power / Toughness: 2 / 2

Discordant Spirit is on the reserved list, which means WOTC has self-imposed restrictions from making functional reprints of this card.