Ramunap Ruins is a uncommon Land — Desert card from Hour of Devastation (HOU), collector number 181. Current market price: $0.37 (foil $4.10), TCGplayer market prices via Scryfall.
{T}: Add {C}. {T}, Pay 1 life: Add {R}. {2}{R}{R}, {T}, Sacrifice a Desert: This land deals 2 damage to each opponent.