Karn, Silver Golem (Oversized) [Commander's Arsenal Oversized] Open the Helvault It has "Whenever this creature

It has "Whenever this creature deals damage to a player

Set: War of the Spark Promos Type: Legendary Planeswalker — Nissa Rarity: Rare Cost: {3}{G}{G} Whenever you tap a Forest for mana

put seven +1/+1 counters on it

Set: Amonkhet Invocations Type: Creature — Elemental Rarity: Mythic Cost: {3}{B}{G} Lord of Extinction's power and toughness are each equal to the number of cards in all graveyards

If you would gain life

Karn, Silver Golem (Oversized) [Commander's Arsenal Oversized] Open the Helvault It has "Whenever this creatureSet: 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.