Combo Opalescence +Day of the Dragons + Magic: the Gathering MTG

Cast Day of the Dragons Opalescence's ability turns all enchantments into creatures Day of the Dragons' ability will exile all creatures and place this amount of Dragon tokens. Since Day of the Dragons is a creature, it will exile itself, and its second ability will trigger, exiling the tokens and returning all creatures to the battlefield. This will trigger Day of the Dragons' ability again, exiling all creatures. The loop will repeat indefinitely, forcing a tie.

Legallity