Volcroth, Lightcrown monarch

When Volcroth enters the battlefield or deals
damage to a player, you become the monarch.
At the beginning of your upkeep, if you are the monarch, Volcroth gains a +1/+1 counter. Then,
he gains +X/+X until end of turn where X is the amount of +1/+1 counters Volcroth has. If you
are not the monarch at the beginning of your
upkeep, remove a +1+1/counter from Volcroth.