Karn, Silver Golem (298) [Urza's Saga] Eldritch Moon Prerelease Promos Set: Scars of Mirrodin Type:

Set: Scars of Mirrodin Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft — {T}: Add one mana of any color

Activate only as an instant

Vastwood Seer enters the battlefield

Tap two untapped creatures you control: Return target permanent to its owner's hand

but for reasons known only to the two of them neither acknowledges the other—or their strained relationship

Karn, Silver Golem (298) [Urza's Saga] Eldritch Moon Prerelease Promos Set: Scars of Mirrodin Type:Set: Urza's Saga 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.