Tiamat [Dungeons & Dragons: Adventures in the Forgotten Realms] SM81 You can only use this

You can only use this effect of “Sinister Serpent” once per turn

Set: Nintendo: Black Star Promos Type: Water Rarity: Black Star Promo Retreat cost: Colorless

including 1–2 card(s) of rarity Rare or higher and 3–5 Uncommon

Set: XY: Evolutions Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

cannot be activated

Tiamat [Dungeons & Dragons: Adventures in the Forgotten Realms] SM81 You can only use thisSet: Dungeons & Dragons: Adventures in the Forgotten Realms Type: Legendary Creature Dragon God Rarity: Mythic Cost: {2}{W}{U}{B}{R}{G} Flying When Tiamat enters the battlefield, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle. "My children will rule over all!"