Gemini Engine [Darksteel] Human Knight Ranger pay X life

pay X life

Set: Eighth Edition Type: Instant Rarity: Common Cost: {G} Target creature gets +3/+3 until end of turn

Set: Ixalan Type: Creature — Merfolk Wizard Rarity: Common Cost: {2}{U} When Watertrap Weaver enters the battlefield

Set: Battle for Zendikar Prerelease Promos Type: Land — Plains Island Rarity: Rare ({T}: Add {W} or {U}

Gemini Engine [Darksteel] Human Knight Ranger pay X lifeSet: 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.