Sun-Blessed Mount is a rare Creature — Dinosaur card from Ixalan (XLN), collector number 288. Current market price: $0.30, TCGplayer market prices via Scryfall.
When this creature enters, you may search your library and/or graveyard for a card named Huatli, Dinosaur Knight, reveal it, then put it into your hand. If you search your library this way, shuffle.