Venomsac Lagac is a common Creature — Lizard Mount card from Aetherdrift (DFT), collector number 185. Current market price: $0.17 (foil $0.19), TCGplayer market prices via Scryfall.
Deathtouch Whenever this creature attacks while saddled, it gets +0/+3 until end of turn. Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)