Dark illusion

"Kintik hadzuska sutta chwituskak! Kintik hadzuska sutta chwituskak! Jiaasjen Jidai, jiassjen Jidai!"

- Darth Sidious, reciting the ancient Balc incantation

The power of dark illusion was summoned through an ancient Sith ritual using both the connection of a Force-bond and reciting a Balc incantation.