Gemini Engine [Darksteel] Samurai Whenever a commander an opponent

Whenever a commander an opponent controls dies

Set: Magic 2014 Type: Sorcery Rarity: Common Cost: {B} Target opponent reveals their hand

Set: Magic 2011 Type: Artifact Creature — Construct Rarity: Rare Cost: {2} {T}: Put a +1/+1 counter on each artifact creature you control

Set: The List Type: Creature — Skeleton Knight Rarity: Uncommon Cost: {B/G}{B/G}{B/G}{B/G} Haste

Goblins Type: Creature — Merfolk Rarity: Uncommon Cost: {2}{U} {T}: Rootwater Hunter deals 1 damage to any target

Gemini Engine [Darksteel] Samurai Whenever a commander an opponentSet: Darksteel Type: Artifact Creature Construct Rarity: Rare Cost: {6} Whenever Gemini Engine attacks, create a colorless Construct artifact creature token named Twin that's attacking. Its power is equal to Gemini Engine's power and its toughness is equal to Gemini Engine's toughness. Sacrifice the token at end of combat.