Merrin, High Exorcist

Soulwalk 2, {w}{w} (Tap mana cost, sacrifice
Soulwalk cost in creatures you control to add
their power and toughness to this creature)
When Merrin, High Exorcist, enters the battlefield, choose a creature type. Merrin,
gains protection from that chosen creature
type.
1{w/b}{w/b}{w/b}; Exile target creature of that chosen type.
Each time Merrin, exiles a creature, put a -1/-1
counter on Merrin.