The Thronetaker

Flying, trample
{3}{b}{r}{g}: Monstrosity 4.
When The Thronetaker becomes monstrous, the player who controls the most Dragons becomes the monarch.
Whenever you become the monarch, you may have The Thronetaker fight target creature an opponent controls.
Whenever a creature dealt damage by The Thronetaker this turn dies, put a +1/+1 counter on The Thronetaker.