Owlbear Cub is a rare Creature — Bird Bear card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 246. Current market price: $1.21 (foil $1.24), TCGplayer market prices via Scryfall.
Mama's Coming — Whenever this creature attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.
All Commander Legends: Battle for Baldur's Gate cards and prices