Tinybones, Pocket Nuisance is a uncommon Legendary Creature — Skeleton Rogue card from Reality Fracture (FRA), collector number 237. Current market price: $0.22 (foil $0.39), TCGplayer market prices via Scryfall.
When Tinybones enters, each opponent discards a card. Whenever a player discards one or more cards, Tinybones deals 1 damage to each opponent.