Tourach's Gate is a rare Enchantment — Aura card from Fallen Empires (FEM), collector number 48. Current market price: $0.59, TCGplayer market prices via Scryfall.
Enchant land you control Sacrifice a Thrull: Put three time counters on this Aura. At the beginning of your upkeep, remove a time counter from this Aura. If there are no time counters on this Aura, sacrifice it. Tap enchanted land: Attacking creatures you control get +2/-1 until end of turn. Activate only if enchanted land is untapped.