Asylum Master

True Name. The Asylum Master's true name is Gogmazios.

Spellcasting. The Asylum Master is a 3rd level spellcaster. His spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The Asylum Master has the following Warlock spells prepared:

Cantrips (at will): mind sliver, thaumaturgy, mage hand

2nd level (2 slots, recharge on short rest): mind spike, darkness, suggestion

Multiattack. The Asylum Master casts one of his spells and uses one of his Lantern attacks.

Lantern Smash. Melee Weapon Attack: +6 to hit, reach 5 ft., 1 target. Hit: 9 (1d12 + 3) bludgeoning damage. 

Lantern Sweep. Melee Weapon Attack: +6 to hit, range 5 ft., 3 targets within 5 feet of each other. Hit: 5 (1d4 + 3) bludgeoning damage.

The Asylum Master can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Asulum Master regains spent legendary actions at the start of his turn.

Uncanny Dash. The Asylum Master can move for up to half of his movement speed. This movement doesn't provoke attacks of opportunity.

Cantrip (Costs 2 Actions). The Asylum Master uses one of his cantrips.

Accumulated Torment (Costs 3 Actions) (Once per Long Rest). The Asylum Master draws power from the patients in his asylum and recovers 1 spell slot.