Shaggy, Ultra Instinct

0: Create a colorless Scooby Snack artifact token with "Sacrifice this artifact: Scooby gains +3/+3 and trample."
-10: You get an emblem with "At the beginning of your upkeep, create a legendary 10/10 colorless Hound creature token named Scooby."
-X: Exile X target permanents or exile each nonland permanent with converted mana cost X or less.