Ketria Triome is a rare Land — Forest Island Mountain card from Ikoria: Lair of Behemoths Promos (PIKO), collector number 250p. Current market price: $19.11 (foil $17.66), TCGplayer market prices via Scryfall.
({T}: Add {G}, {U}, or {R}.) This land enters tapped. Cycling {3} ({3}, Discard this card: Draw a card.)