Crescent Island Temple is a uncommon Legendary Enchantment — Shrine card from Avatar: The Last Airbender (TLA), collector number 129. Current market price: $0.23 (foil $0.33), TCGplayer market prices via Scryfall.
When Crescent Island Temple enters, for each Shrine you control, create a 1/1 red Monk creature token with prowess. (Whenever you cast a noncreature spell, it gets +1/+1 until end of turn.) Whenever another Shrine you control enters, create a 1/1 red Monk creature token with prowess.