Weavebound Enchanter

Defensive Phase. The Weavebound enchanter can phase through solid objects as a reaction, gaining resistance to all damage until the start of its next turn.

Weave Absorption. When the Weavebound enchanter kills a creature with a magical attack, it regains hit points equal to the damage dealt.

Shape Reflection. The Weavebound enchanter can take a form that the person perceiving it imagines.

Spellcasting. The [Weavebound enchanter] is a 5-level spellcaster. Its spellcasting ability is [charisma] (spell save DC 15, +7 to hit with spell attacks). The [Weavebound enchanter] has following [wizard] spells prepared:
Cantrips (at will): [Mage Hand], [Minor Illusion] 
1st level (3 slots): [Charm Person] 

2nd level (2 slots): [Invisibility]

4th level (2 slots): [Dimension Door]

Magic Drain. The Weavebound enchanter targets a creature it can see within 30 feet. The target must succeed on a DC 15 Constitution saving throw or take 6d6 necrotic damage, and the Weavebound enchanter regains hit points equal to half the damage dealt.

Ethereal Touch. Melee Magical Attack: +6 to hit, reach 5 ft., 1 target. Hit: 14 (2d8 + 4) [force] damage. 

Ephemeral Distraction: The Weavebound Enchanter creates illusory duplicates of itself as a bonus action. Until the start of its next turn, attackers have disadvantage on attack rolls against the Weavebound Enchanter, and it gains advantage on attack rolls against creatures who can see it. After using this ability, it can't use it again until a long rest.

Enchanted Surge: As a bonus action, the Weavebound Enchanter taps into the magical weave, briefly increasing its magical prowess. It gains a bonus to its spell attack rolls and spell save DC equal to its proficiency bonus until the start of its next turn.

Parasitic Bond. When the Weavebound enchanter successfully hits a creature with Ethereal Touch, it establishes a parasitic bond. The target must make a DC 16 Charisma saving throw or become the Weavebound enchanter's chosen host.