Mesa Pegasus is a common Creature — Pegasus card from Limited Edition Beta (LEB), collector number 29. Current market price: $9.80, TCGplayer market prices via Scryfall.
Flying; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)