Karn, Silver Golem [Arena League 1999] Plains Swamp if you had another creature

if you had another creature enter the battlefield under your control last turn

Choose any target

Water Elementals shift without warning from tranquility to tempest

Whenever an opponent taps an artifact for mana

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Promos Type: Legendary Artifact Rarity: Rare Cost: {2} When Eye of Vecna enters the battlefield

Karn, Silver Golem [Arena League 1999] Plains Swamp if you had another creatureSet: Arena League 1999 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.