Captain Skath of Targos

Innate Spellcasting. Due to his Fiendish Legacy, Skath can cast Fire Bolt +7 at will to a range of 120 ft. causing (2d10) on a hit. Skath can also cast Hellish Rebuke twice per long rest and Darkness once per long rest.

Resistance.  Skath is resistant to Fire damage.

Speedy. Skrath gains 10 ft to his movement rate. If he takes the Dash action on his turn, Difficult Terrain doesn't cost extra movement. Opportunity Attacks have Disadvantage against Skath.

Mastery. VEX:  If Skath hits a creature with a Shortsword and deals damage, he will have Advantage on his next attack roll against that creature before the end of his next turn.

Mastery. SAP: If Skath hits a creature with a Longsword, that creature has Disadvantage on its next attack roll before the start of Skath's next turn.

Mastery. SLOW: If Skath hits a creature with a Longbow and deals damage, its Speed is reduced by 10 feet until the start of Skath's next turn. 

Multiattack. The warrior makes one Short Sword AND one Long Sword attack or two Longbow attacks. Skath can forego one attack to cast Fire Bolt instead.

Shortsword. Melee Attack Roll: +6, reach 5 ft. Hit: 6 (1d6+3) Piercing damage. Mastery. VEX

Longsword. Melee Attack Roll: +5, reach 5 ft. Hit: 8 (1d8 + 3) Slashing damage. Mastery. SAP

Longbow. Ranged Attack Roll: +7, range150/600 ft. Hit: 8 (1d8 + 2) Piercing damage. Mastery: SLOW

Second wind. (three times per long rest) Skath can draw upon a limited well of physical and mental stamina to regain (1d10 + 6) hit points.

Hellish Rebuke.  (twice per Long Rest) if Skath takes damage from a creature he can see within 60 ft of himself, it must save vs. DEX taking 2d10 Fire damage on a failed save or half as much damage on a successful one.