Karn, Silver Golem (Commander's Arsenal) [Commander's Arsenal Oversized]

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 converted mana cost until end of turn.