Tiamat (Showcase) [Secret Lair Drop Series] Pioneer Whenever you attack

Whenever you attack

where X is the total amount of life your opponents have lost this turn

if that creature entered the battlefield this turn

and blue and white

Each creature you tap while casting this spell pays for {1} or one mana of that creature's color

Tiamat (Showcase) [Secret Lair Drop Series] Pioneer Whenever you attackSet: Secret Lair Drop Series 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.