The Gitrog, Ravenous Ride is a mythic Legendary Creature — Frog Horror Mount card from Secret Lair Drop (SLD), collector number 2791. Current market price: $6.72 (foil $3.94), TCGplayer market prices via Scryfall.
Trample, haste Whenever The Gitrog deals combat damage to a player, you may sacrifice a creature that saddled it this turn. If you do, draw X cards, then put up to X land cards from your hand onto the battlefield tapped, where X is the sacrificed creature's power. Saddle 1