Personal Decoy is a rare Planeswalker — Duck card from Mystery Booster Playtest Cards 2019 (CMB1), collector number 96. Current market price: $3.02, TCGplayer market prices via Scryfall.
Personal Decoy enters with a number of loyalty counters on it equal to your life total. If it would leave the battlefield, exile it instead of putting it anywhere else. You can't be attacked. +1: You gain 1 life. −4: Draw a card.