Bahamut, King Of Good Dragons

Hexproof, Flying, Trample, Vigilance, Protection from Nonlegendary Dragons you don't control.
Other Dragon, Drake, and Kobold creatures you control get +1/+2.
Bahamut has Deathtouch as long as it is dealing combat damage to a Dragon, Drake, or Kobold.
When Bahamut enters the battlefield, you may cast a dragon card from your hand, paying half its mana cost (round up)