Power Surge [International Collectors' Edition] Shapeshifter Spirit during either player's turn: You

during either player's turn: You can detach 1 Xyz Material from this card and send 1 card from your hand to the Graveyard to target 1 face-up card your opponent controls

If this card in your possession is sent to your GY by an opponent's card effect: You can add 1 "Magical Musket" card from your Deck or GY to your hand

Early Jamuraan hunters devised a weapon that would return to its source

Set: Modern Horizons Type: Creature — Rat Rarity: Uncommon Cost: {2}{B} {X}: Crypt Rats deals X damage to each creature and each player

Set: Khans of Tarkir Type: Creature — Human Warrior Rarity: Common Cost: {W} {B}: Mardu Hateblade gains deathtouch until end of turn

Power Surge [International Collectors' Edition] Shapeshifter Spirit during either player's turn: YouSet: International Collectors' 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.