Alduin The World Eater

Flying Lifelike Hate Deathtouch
When Alduin The World Eater enters the battlefield destroy all other creatures
{w}{u}{b}{r}{g}{t}: Create a 5/5 dragon
{x}{b}{b}{b}{t}: Exile X non dragon creatures
"And the Scrolls have foretold, of black wings in the cold, That when brothers wage war come unfurled! Alduin, Bane of Kings, ancient shadow unbound, With a hunger to swallow the world!"
-Song of the Dragonborn