Derro Shadowseeker

Erratic Movement. The shadowseeker can take the Disengage or Hide action as a bonus action on each of its turns. In addition, opportunity attacks against the shadowseeker are made with disadvantage.

Evasion. If the shadowseeker is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the shadowseeker instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Magic Resistance. The shadowseeker has advantage on saving throws against spells and other magical effects.

Sneak Attack (1/Turn). The shadowseeker deals an extra 14 (4d6) damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally of the shadowseeker that isn't incapacitated and the shadowseeker doesn't have disadvantage on the attack roll.

Sunlight Sensitivity. While in sunlight, the shadowseeker has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Multiattack. The derro shadowseeker makes three melee attacks.

Dagger. Melee or Ranged Weapon Attack: +8 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 7 (1d4 + 5) piercing damage.

Light Crossbow. Ranged Weapon Attack: +8 to hit, range 80/320 ft., one target. Hit: 9 (1d8 + 5) piercing damage.

Maddening Convulsions (Recharge 5-6). The shadowseeker's body contorts and spasms in bizarre ways, confounding other creatures. Each non-derro creature within 5 feet of the shadowseeker that can see it must succeed on a DC 15 Wisdom saving throw or be affected as if by a confusion spell for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the shadowseeker's Maddening Convulsions for the next 24 hours.