Return of Ekuril

Search your graveyard and exile for a Legendary Dragon creature card and put it
onto the battlefield under your control.
Ekuril, the cruller of the two elder dragon-gods,
was destroyed in the Astinar cataclysm, along
with his brother Wruthin. Unfortunately for the world, his cult managed to bring him back centuries later, in a mad attempt to end the Dragonguard.