Power Surge [Beta Edition] Azra Assassin it deals 4 damage to

it deals 4 damage to target creature or planeswalker an opponent controls and you gain 4 life

While voting

Set: Innistrad: Double Feature Type: Legendary Planeswalker — Teferi Rarity: Mythic Cost: {2}{W}{U} +1: Choose up to one target artifact

or planeswalker to its owner’s hand

Set: The List Type: Artifact Rarity: Rare Cost: {4} {1}

Power Surge [Beta Edition] Azra Assassin it deals 4 damage toSet: 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.