Corvid Mentality. can Sprout giant wings to be able to move 30 ft. in the air. any treasure that is magic like weapons, armor, or objects, the Collector is attracted to.

Hold Breath. can hold breath for 5 hours.

Spellcasting. [Wisp Collector] is a 4th-level spellcaster. Its spellcasting ability is [con] (spell save DC 12, +2 to hit with spell attacks). [Wisp Collector] has the following spells prepared:

Cantrips (at will): [Thaumaturgy], [Dancing Lights] [Frostbite]
1st level (8 slots): [Hellish Rebuke], [Color Spray] [Burning hands]
2nd level (6 slots): [Barkskin] [Hold Person] [Misty Step] [Moonbeam]
3rd level (4 slots): [Animate Dead] [Counterspell] [Fireball]
4th level (3 slots): [Blight] [Dimension Door]

Wisp infusion/defusion. can fuse wisps into objects, either changing a damage type, add a effect, add a usable spell same as the ability number, add damage same as the ability number, add AC same as the ability number. can take and give wisps from magic items.
White: 1, Psychic.
Blue: 1, Lightning.
Yellow: 1, Thunder.
Green: 1, Acid.
Red: 1, Bludgeoning, Slashing, Piercing.
Purple: 2, Poison.
Pink: 2, Radiant.
Cyan: 2 Lightning.
Orange: 2, Bludgeoning.
Black: 3, All. 

Claws. Melee Weapon Attack: reach 5 ft., 1 target. Hit: 4 (1d6 + 2) [slashing] damage. 

Corvid. Ranged Weapon Attack: +1 to hit, range 20/40 ft., 1 target. Hit: 7 (2d6 + 2) [Piercing] damage.