Arcbound Slith

Slith Arconexo (Arcbound Slith) (pt)

Artifact Creature - Slith (CMC 2)
Whenever Arcbound Slith deals combat damage to a player, put a +1/+1 counter on it.
Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)