Your search for "personal decoy" revealed the following:
Personal Decoy - No Symbol (CMB2) from Mystery Booster Playtest Cards 2021, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Alison Lührs Card Text:CARDNAME enters the battlefield with a number of loyalty counters on it equal to your...
Personal Decoy - Symbol (CMB1) from Mystery Booster Playtest Cards 2019, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Alison Lührs Card Text:CARDNAME enters the battlefield with a number of loyalty counters on it equal to your life...