Cinder

fly: can take flight up to 40ft in the air (must make one full action to do so) can stay in the air as long as they want unless brought down.

Unending flames: This creature uses dark flames on every attack it gives. 

Multiattack. The veteran makes three attacks (multi-target). If it has a shortsword drawn, it can also make a shortsword attack.

Longsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (2d6 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used with two hands. 1d4 fire damage with every successfull attack

Shortsword. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 6 (1d12 + 2) piercing damage. 1d6 fire damage.

Heavy Crossbow. Ranged Weapon Attack: +3 to hit, range 100/400 ft., one target. Hit: 6 (1d10 + 3) piercing damage. Hit: 9 (2d8+2) 15-foot orb of explosive damage.

Fire Ball (Recharge 5–6 can roll for this before any action). The veteran exhales a fire ball in a 15-foot orb with a 45-foot blast radius. Each creature in that area must make a DC 18 Dexterity saving throw, taking 24 (7d6) fire damage on a failed save, or half as much damage on a successful one.

Cast Down (once a day). Cinder swoops onto a single enemy while in flight grappling them, breathing fire on their head, then slamming them down to earth. player must succeed a DC 20 strength saving throw or take 15 (2d12+2) fire damage and 12 (2d8 blugeoning damage) on a failed save. half all damage on a successful save.

Bonus action: careful retreat. after a successful  attack this creature can choose to reposition itself 30ft away in any direction from all targets unless cornered. (this action cannot be taken if wings are damaged in any way)