Power Sealing Spell

Power Sealing Spell is a powerful binding spell to seal the power of a witch, reducing their power to the point that the witch becomes less powerless, if not sealed completely.

It was cast by Olivette and other Grand Coven elders upon Rowena, shortly before her expulsion.

Procedure
The detail about how this spell casted is unknown. But presumably, the spell was planted to the target' neck using unknown means. The seal appears as purple five-tiered invisible ribbons that bind the target. Each ribbon adorned with runic sigils.

Limitation
The seal, however, in Rowena case, not fully inhibit the use of the magical power completely. Rowena even still able to cast various potent spell, but to the point that she deemed as a "parlor trick".

Unless the targeted know the way to breaking the spell, the spell remained eternal.

Breaking
It almost difficult to break the spell. The only known way to break the spell is a ritual that contained in the Black Grimoire. Once the breaking ritual casted, the seal will appear again but in the disturbed form before fully dissipated.

Appearance

 * Season 13
 * Various & Sundry Villains