Karn, Silver Golem (Commander's Arsenal) [Commander's Arsenal Oversized] Drone you may cast sorcery spells

you may cast sorcery spells as though they had flash

Set: Mirrodin Type: Artifact Creature — Golem Rarity: Uncommon Cost: {6} Imprint — When Mirror Golem enters the battlefield

put a number of +1/+1 counters on it equal to the amount of mana this creature produced

aether-seer

Set: Wizards Play Network 2010 Type: Enchantment Rarity: Rare Cost: {2}{B}{B} As Curse of Wizardry enters the battlefield

Karn, Silver Golem (Commander's Arsenal) [Commander's Arsenal Oversized] Drone you may cast sorcery spellsSet: 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.