Chains of Hellfire

8th-level conjuration

Casting Time:1 action

Range:60 feet

Components:V, S, M (a pair of manacles forged in the nine hells and quenched in demon blood)

Duration:1 minute

Classes: Warlock, wizard

Choose a point on the ground you can see within range. A spike emerges at the chosen point, along with eight red-hot pairs of manacles, each bound by equally hot chains. Choose a number of creatures within 60 feet of the chosen point to be bound by the manacles. A creature of Large size or smaller requires one pair of manacles, a creature of Huge size requires two, and a creature of Gargantuan size requires four. You can choose to double the number of required manacles on a creature to impose disadvantage on all skill checks made to break free of the chains, to bypass a creature’s immunity to being restrained, or to bypass its resistance or immunity to fire damage. The chosen creatures are immediately restrained. The manacles extend to the Ethereal Plane.

The chains extend in a straight line from the spike to the creatures they bind and create difficult terrain in any space they pass through. The first time a creature enters a space the chains pass through or starts its turn there, the creature takes 4d6 fire damage. When a creature is shackled for the first time or ends its turn restrained, it takes 10d6 fire damage. If the restrained creature tries to use magic to teleport out of the manacles it must first make a Charisma saving throw against your spell save DC. On a failure, the spell fails, and the creature loses the spell slot.

A creature restrained by the manacles can use its action to make a Strength or Dexterity check (its choice) against your spell save DC to break free from all manacles binding it. Chains and shackles that are not binding a creature turn to harmless smoldering ash before dissipating.