Azrael the Decaying One

Immune to Necromancy - causes immunity to Necromancy

Immune to Acid - causes immunity to Acid Damage

Heals by poison damage -  Azreal heals by poison

Takes damage from healing spells - any healing spells takes damage

Vulnerability to fire - takes double damage to any fire spells

Spellcasting. Azrael the Decaying One is a 3 - level spellcaster. Its s spellcasting ability is Dex (spell save DC 10, +2 to hit with spell attacks). Azael the Decaying One has the following Warlock/ Cleric spells prepared:

Cantrips (at will): [Light], [Sarced Flame], [Thaumaturgy]

1st Level (2 slots) [Command], [animate dead], [protective barrier,]

2nd Level (2 slots) [Hellish Rebuke], [counter spell]

Slam. Melee Weapon Attack: -1 to hit, reach 10 ft., 1 target. Hit: 1 (1d8 -1 ) [Bludgeoning] damage. 

Broken Cleave. Melee Weapon Attack: +2 to hit, reach #15 ft., 3 target. Hit: 1(2d4 + 1) [Slashing] damage. 

Stabbing Bone (only works when bloodied). Melee Weapon Attack: +3 to hit, reach 5 ft.,  1 target. Hit: 1 (1d12 + 1) [Piercing] damage.  [bloodies opponents]

Winged Shards. Ranged Weapon Attack: +3 to hit, range #10/50 ft.,  50 target. Hit: 1 (8d2 + 0) [piercing] damage.

Broken Halo Toss. Ranged Weapon Attack: +3 to hit, range 5/30 ft., 3 target. Hit: 1 (1d6 + 1) [Slashing] damage. Like Captain Americas Shield except slices instead of bouncing and bounces back at last hit

Bonus actions only work when bloodied

Fire Vulnerability. When on fire disadvantage on next attack

Speed Boost. When Bloodied gets bonus action