Primal Doom

Wondrous Item, rarity varies
Each primal doom appears to be a globe of crystal or glass with a murky liquid or smoke churning inside. The wielder of a primal doom hurls the globe at a creature within 60 feet. The globe shatters on impact, releasing the primal essence of the Abyss within. The target must make a DC 16 Wisdom saving throw. If it succeeds, the primal essence can gain no purchase in the target's mind and it dissipates harmlessly with no other effect. If the saving throw fails, the taget takes 5 (1d10) psychic damage and the Abyssal essence coalesces around that stolen bit of the target's psyche, becoming a physical being at the end of the turn. The creature remains for 1 minute and is under the control of the creature who threw the primal doom.

The stats of the creature depend on the type of primal doom.

• uncommon: shadow demon
• rare: chasme or vrock
• very rare: hezrou