Skills and Mystics Rank Up Suggestions?

Ben_Pain

Hey guys. Just need your input. I have both a Mystic and Skill Rankup 2 to 3 gems. I'm trying to figure who to bring up to finish 8.4 and act 9. Any recommendations would be appreciated even if it's to hold off for certain champs. Thanks again.

Ortoun

Chee for skill, enchantress, Kushala, or Juggs for mystic