Karn, Legacy Reforged [March of the Machine: The Aftermath] Phyrexian Myr Until your next end step

Until your next end step

Set: Secret Lair Drop Series Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Set: Unknown Event Type: Creature — Human Soldier Rarity: Common Creatures opponents control entering the battlefield don't cause backup abilities to trigger

Whenever a Dragon enters the battlefield under your control

Set: Unknown Event Type: Creature — Shapeshifter Rarity: Common During deckbuilding

Karn, Legacy Reforged [March of the Machine: The Aftermath] Phyrexian Myr Until your next end stepSet: March of the Machine: The Aftermath Type: Legendary Artifact Creature Golem Rarity: Mythic Cost: {5} Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.