Shapeshifter is a uncommon Artifact Creature — Shapeshifter card from Fourth Edition (4ED), collector number 345. Current market price: $0.21, TCGplayer market prices via Scryfall.
As this creature enters, choose a number between 0 and 7. At the beginning of your upkeep, you may choose a number between 0 and 7. Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number.