Elrorth, King of all dragons

When Elrorth, King of all dragons enters the battlefield, exile all Nibolas planeswalkers
Flying, hexproof, defender
All dragon creatures have +4/+4
when an dragon enters the battlefield, you gain
life equal to its power less than converted mana
cost
when I heared that my son Nicol Bolas went that
path, I never feld more ahamed -Elrorth