Power Surge [Beta Edition] Scheme Set: Time Spiral Timeshifted Type:

Set: Time Spiral Timeshifted Type: Instant Rarity: Rare Cost: {G} Counter target instant or Aura spell that targets a permanent you control

Whenever a creature enters the battlefield under an opponent's control

Set: Aether Revolt Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {6} Whenever Gonti's Aether Heart or another artifact enters the battlefield under your control

"Vanbrug's House"

Then exchange control of artifacts the same way

Power Surge [Beta Edition] Scheme Set: Time Spiral Timeshifted Type:Set: Beta Edition Type: Enchantment Rarity: Rare Cost: {R}{R} At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.