Karn, Silver Golem (Oversized) [Commander's Arsenal Oversized] Fungus Dinosaur Set: March of the Machine:

Set: March of the Machine: The Aftermath Type: Legendary Artifact Creature — Golem Rarity: Mythic Cost: {5} Karn

Set: POP Series 4 Type: Metal Rarity: Rare Retreat cost: Colorless

"Species XR17 feeds upon the mental energies of its victims

Set: World Championships 2006 Type: Psychic Rarity: Ultra Rare Retreat cost: 0

{W}{W}{U}{U}{B}{B}{R}{R}{G}{G}

Karn, Silver Golem (Oversized) [Commander's Arsenal Oversized] Fungus Dinosaur Set: March of the Machine:Set: Commander's Arsenal Oversized Type: Legendary Artifact Creature Golem Rarity: Rare Cost: {5} Whenever Karn, Silver Golem blocks or becomes blocked, it gets 4 +4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.