Room of Refuge is a common Land card from Reality Fracture (FRA), collector number 188. Current market price: $0.17 (foil $0.20), TCGplayer market prices via Scryfall.
This land enters tapped. As it enters, choose a color. {T}: Add one mana of the chosen color. {5}, {T}, Sacrifice this land: Put two +1/+1 counters on target creature. Activate only as a sorcery.