Crimson Bands of Cyttorak

Invoking Cyttorak, you conjure a number of crimson bands which encircle and capture a Huge or smaller target of your choice within range. The target may make a Dexterity saving throw to avoid capture. The escape DC is equal to 8 + twice your spell attack modifier. On a failure, they are restrained and take 3d8 Fire and 2d6 Bludgeoning Damage.

As a bonus action, the caster may choose to tighten the bands, dealing an additional 1d6 Fire and +2 Bludgeoning damage.

These bands may only be broken by an artifact with the Rend quality, which must succeed on a DC 20 proficiency check to dispel, Disintegration, Dispel Magic, or by the spellcaster.

At Higher Levels. If you cast this using a 5th-level or higher spell slot, the target has disadvantage on both the saving throw and the escape roll.