Jonu Zihtil, Pureblood Legacy

Rank II - Acolyte
Alert, Bloodlust
If you control a card with Sith Sorcery as an
ability, you may tap this card and pay {g}{g} to use
a Rank II Sith Spell effect.
Force Slow {g}{g} (Place a -1/-1 counter on a Being
or Creature card on the field, then tap it until the end
of your turn.)