Sakashima the Impostor [Mystery Booster] SM164 but I believe a more

but I believe a more mundane power source might suffice

but how could that be

Set: 30th Anniversary Edition Type: Creature — Vampire Rarity: Uncommon Cost: {3}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach

Set: Streets of New Capenna Prerelease Promos Type: Land — Mountain Forest Plains Rarity: Rare ({T}: Add {R}

Sakashima the Impostor [Mystery Booster] SM164 but I believe a moreSet: Mystery Booster Type: Legendary Creature Human Rogue Rarity: Rare Cost: {2}{U}{U} You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."