Warlock of the Fiend

Traits

Dark One's Own Luck (Recharges after a Short or Long Rest). When the warlock makes an ability check or saving throw, it can add a d10 to the roll. It can do this after the roll is made but before any of the roll's effects occur.

Actions

Multiattack. The warlock makes three Scimitar attacks.

Scimitar. 6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage plus 14 (4d6) fire damage.

Hellfire. Green flame explodes in a 10-foot-radius sphere centered on a point within 120 feet of the warlock. Each creature in that area must make a 15 Dexterity saving throw, taking 16 (3d10) fire damage and 11 (2d10) necrotic damage on a failed save, or half as much damage on a successful one.

Reactions

Fiendish Rebuke (3/Day). In response to being damaged by a visible creature within 60 feet of it, the warlock forces that creature to make a 15 Constitution saving throw, taking 22 (4d10) necrotic damage on a failed save, or half as much damage on a successful one.