Kowaku, the Charmer

Whenever you cast an instant or sorcery spell,
you may pay {1}. If you do, put a charm counter
on target creature.
{3}{u}{u}, {t}: Remove all charm counters from
target creature. If you removed a number of
counters greater than or equal to its converted
mana cost this way, gain control of it.
Partner with Shodoku, the Finisher