Bioluminary is a uncommon Creature — Merfolk Performer card from Unfinity (UNF), collector number 38. Current market price: $0.06 (foil $0.25), TCGplayer market prices via Scryfall.
Whenever Bioluminary deals combat damage to a player, you get {TK}{TK}, then you may put a sticker on a nonland permanent you own.