Slaughter Singer 216 (Phyrexia: All Will Be One)

Toxic 2 (Players dealt combat damage by this creature also get two poison counters.) Whenever another creature you control with toxic attacks, it gets +1/+1 until end of turn.

NM - $0.70
LP - $0.70
MP - $0.70
HP - $0.70
DMG - $0.70