Corpse Guard: Apprentice

Amateur Warmage. The apprentice has Advantage on Constitution saving throws it makes to maintain Concentration.

Grasping Mist. Whenever the apprentice casts Fog Cloud, nonmagical flames in the spell's Sphere are extinguished, and creatures other than the apprentice and its allies treat the spell's Sphere as Difficult Terrain.

Undead Fortitude. If damage reduces the apprentice to 0 Hit Points, it makes a Constitution saving throw (DC 5 plus the damage taken) unless the damage is Radiant or from a Critical Hit. On a successful save, the apprentice drops to 1 Hit Point instead.

Multiattack. The apprentice makes two Deathly Burst attacks.

Deathly Burst. Melee or Ranged Attack Roll: +7, reach 5ft. or range 90 ft. Hit: 12 (2d6+4) Cold, Necrotic, or Poison damage.

Spellcasting. The apprentice casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 15):

At Will: Fog Cloud, Mage Armor (included in AC), Minor Illusion, Prestidigitation
2/Day Each: Blindness/Deafness, Detect Magic, Grease, Mirror Image
1/Day Each: Bestow Curse, Haste, Magic Weapon

Misty Step (3/Day). The apprentice casts Misty Step, using the same spellcasting ability as Spellcasting.

Magic Absorption. Trigger: The apprentice takes damage from a spell or magical effect. Response: The apprentice reduces the total damage taken by 8 (1d8+3).