Ichorclaw Myr
Ichorclaw Myr {2}
Artifact Creature - Myr | Power/Toughness: 1 / 1
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.
Latest set: [SOM] Scars of Mirrodin (C)