Bozak Bishop

Death Throes. When the bozak dies, its body freezes solid and explodes.
Each creature within 10 feet of it must make a DC 15 Dexterity saving
throw, taking 7 (2d6) bludgeoning damage and 10 (3d6) cold damage on
a failed save, or half damage on a successful one.
If the bozak dies when its reflexive immolation is active, its death
throes affect each creature within 20 feet of it (with the same saving
throw as noted above). In addition, portions of the bozak’s frozen body
turn the area of effect into difficult terrain until the end of the following
round.

Glide. If the bozak falls and isn’t incapacitated, it takes no falling
damage and can move up to 2 feet horizontally for every 1 foot it
descends.

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

Multiattack. The bozak makes three Maul or Chromatic Ray attacks. It
can replace two attacks with a use of Spellcasting.
Maul. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (2d6
+ 4) bludgeoning damage, plus 7 (2d6) cold damage if the bozak is
immolated.
Chromatic Ray. Ranged Spell Attack: +9 to hit, range 60 ft., one target.
Hit: 17 (5d4 + 5) radiant damage.

Divine Breath (Recharge 6). The bozak exhales its choice of acid, cold,
fire, lightning, or poison in a 60-foot line that is 5 feet wide. Each
creature in the line must make a DC 17 Dexterity saving throw, taking 28
(8d6) damage of the chosen type on a failed save, or half damage on a
successful one.

Spellcasting. The bozak casts one of the following spells, requiring no
material components and using Wisdom as the spellcasting ability (spell
save DC 18):
At will: bane, guidance, thaumaturgy, Toll the Dead lvl 5 (2d8 or 2d12)

2/day each: command (cast at 3rd level), dispel magic, lesser restoration
1/day each: banishment, blade barrier, dispel evil and good, revivify

Dragon Queen’s Favor (4/Day). The bozak or one creature it can see
within 60 feet of itself regains 10 (4d4 + 10) hit points.

Delay Death Throes (2/Day). When a creature with the Death Throes
trait dies within 30 feet of the bozak, the bozak delays the creature’s
Death Throes until the end of the bozak’s next turn.

Reflexive Immolation (1/Day). In response to being damaged, the
bozak is wreathed in wispy multicolored flames for 5 rounds. The bozak
gains resistance to cold and radiant damage while immolated. A
creature that touches the bozak or hits it with a melee attack within 5
feet of it takes (3d6) cold damage, and the bozak’s melee attacks inflict
an additional (2d6) cold damage. An immolated bozak sheds bright
light in a 10-foot radius and dim light for an additional 10 feet.