They Who Know No Rule

Flash
When this creature enters the battlefield, counter target spell unless its owner pays X. If that spell is countered this way, exile it under this creature
instead of putting it into its owner's graveyard.
They Who Know No Rule enters the battlefield
with X +1/+1 counters.
{u}{u}, {t}, Remove all +1/+1 counters: Play spell
exiled under They Who Know No Rule as though
it were cast.
Rulers will fall!