Astelnair is a mod that adds new creatures and much more.

You can do something similar with the air elementals, only remove the faces (or masks) from their bodies (if possible), recolor their body (or the smoke that replaces it) to red (if possible, add a fire animation), and give them the "Ignite" ability (like the Fire Hounds, but slightly stronger if possible). Fire resistance 75%, air resistance 50%, resistance to death and mind control 25%, weapon resistance 25%. Name it Ifrit or Fire Spirit (depending on the name of the aforementioned creature).

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Thank you for the program.

Always happy to help.

Added 11 minutes ago
Another idea is to take the Tyrant, slightly change its appearance to undead (recolor it, possibly replace the head with a skull, make the wings possibly with holes and slightly rotten (peeling, like the Bone Dragon's wings)), borrow the scythe texture from the Reaper and give it instead of the axe (after increasing its size) (if it doesn't fit, you can take the scythe texture from the Hell Avenger and make it a bit more undead-style), it will walk and move like a Tyrant, attack like a Tyrant, but with a scythe, possibly give it the ability to summon Bone Golems after killing (or ghosts). Melee, attack on one cell, reduced health, weapon immunity, possibly also give it a debuff (like the Reapers). Resistance to death 75%, resistance to mind control 50%, vulnerability to fire 50%, vulnerability to other elements 25%. You can borrow the name from T. Goodkind's book "The Second Law of Magic" - Deathbringer (that's what the main character was called, but that's a plot detail).

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Possibly a wrath accumulator with reduced damage.

Added 6 minutes ago
You can take Mizrael, recolor the wings to the color of the eagle's wings (brown on top, more white on the bottom), experiment with the armor elements (slightly in the elven style), recolor the armor to a light brown color. Give it an area attack (3), melee range, movement range 2, upgrade to 3, resistance to elements 50%, resistance to mind control and death 25%, weapon resistance also 25% (if it's too strong, then reduce all resistances to 25%), make the attack like the Elven Sorceresses, possibly bee venom. Name it Forest Guardian or Forest Warden (or Alliance Warden)