Multiattack

The pact lich makes four enhanced eldritch blast attacks.

Maddening Touch

Melee Spell Attack: +10 to hit, reach 5 ft., one target. Hit: 10 (3d6) necrotic damage. The target must succeed on a DC 18 Charisma saving throw or have vivid hallucinations for 1 minute. During this time, the target is blinded, stunned, and deafened, sensing only the hallucinatory terrain and events. The hallucinations play on aspects of the creature's deepest fears. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Enhanced Eldritch Blast

Ranged Spell Attack: +10 to hit, range 300 ft., one target. Hit: 10 (1d10 + 5) force damage. On a successful hit, the pact lich can push the target 10 feet away from it in a straight line.

Hurl Through Hell (1/Day)

The pact lich targets one creature it can see within 60 feet of it. The target must make a DC 18 Wisdom saving throw. On a failure, the target disappears and is paralyzed as it is hurtled through the nightmare landscape of the lower planes. At the end of the pact lich's next turn, the target returns to the space it previously occupied, or the nearest unoccupied space, and is no longer paralyzed. If the target is not a fiend, it takes 55 (10d10) psychic damage when it returns. The target must succeed on another DC 18 Wisdom saving throw or be frightened until the end of the lich's next turn as the target reels from its horrific experience.