Arcbound Ravager [Darksteel] Token Whenever a creature an opponent

Whenever a creature an opponent controls with a -1/-1 counter on it dies

) {G}: Regenerate River Boa

Set: Commander 2014 Type: Legendary Creature — Elf Warrior Rare Cost: {1}{G}{G} {G}: Regenerate another target Elf

Set: Unlimited Edition Type: Sorcery Uncommon Cost: {1}{G} Return target card from your graveyard to your hand

Arcbound Ravager [Darksteel] Token Whenever a creature an opponentSet: Darksteel Type: Artifact Creature Beast Rare Cost: {2} Sacrifice an artifact: Put a +1 +1 counter on Arcbound Ravager. 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.)