Grenzo, Warden of Fiora

Goblins you control have Dethrone (Whenever it attacks the player with the most life or tied for most
life, put a +1/+1 counter on it.)
If three or more Goblins you control deal combat damage to a player
in a turn, you become the monarch.
"First I was the warden of a dungeon. Now I hold the
keys to the entire plane. Strangely, it doesn't feel like
much of a difference."