Arrath Zalorrozok

Draining Link. Arrath can draw from his brother, Alphalon's physical being to regain magical power. As a bonus action, Arrath can regain spell slots through his brand of Zalorrozok he shares with Alphalon, dealing 11 (2d10) Necrotic damage and regaining one spell slot.

Boons of Zalorrozok. Arrath can cast the mirror image spell at will. Additionally, Arrath has the following Warlock invocations: agonizing blast, bewitching whispers, eldritch mind

Spellcasting. Arrath is an 8th-level spellcaster. His spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). Arrath has following Warlock spells prepared:

Cantrips (at will): eldritch blast, mind sliver, true strike (targets Alphalon only)
1-4th level (2 slots): hellish rebuke, charm person, suggestion, counterspell, fly, hunger of hadar, summon greater demon

Vincere. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit:  8 (1d8 + 4) psychic damage and the target must make a DC 10 constitution saving throw or become stunned until the start of their next turn.