Fey Ancestry. Able has advantage on saving throws against being charmed, and magic can’t put the drow to sleep.

Weapon Changer. The human can use an action to change his weapon from one kind to another. i.e. change from sword to a mace, or a war-hammer to a war-axe.

Regeneration. If the human is killed, he spends 3 months in a sarcophagus regenerating, and upon completion of regeneration, retains his memories from his previous "incarnation" and once again roams about the land

Multiattack. Able makes two shortsword attacks.

Attack. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage plus 10 (3d6) poison damage.

Rage. As a bonus action, Able can go into a rage. The rage lasts the duration of the battle, and only ends when the human is killed

Parry. Able adds 3 to its AC against one melee attack that would hit it. To do so, the human must see the attacker and be wielding a melee weapon.