Louvaq, the Aberrant is a rare Legendary Creature — Mutant card from Mystery Booster Playtest Cards 2019 (CMB1), collector number 95. Current market price: $0.85, TCGplayer market prices via Scryfall.
Protection from modified creatures (Modified creatures have a power, toughness, or ability different than their printed versions.) At the beginning of each player's end step, you may put a +1/+1 counter on target creature that player controls.