Now with optional ghostly-blue texture!

Overview:

-The patronus turns undead up to level 45 in a 45 ft area, and lasts for 45 seconds.
-It also heals allies 5 hp/second.
-The summon is invulnerable, but does 0 damage.
-If the undead get more than 45 ft away, or if the patronus dissipates, they quickly return to attacking the player.
-Magnitude (maximum undead level that can be turned) and radius is hard-set, and not affected by perks
-Duration is increased by dual-casting
-Non-undead enemies will often get distracted by a patronus, even if they are not negatively affected
-Available summons are ash hopper, bear, boar, dog, elk, fox, goat, mudcrab, rabbit, and wolf.
-All summons are identical except for their speed and size, and cost the same amount of magicka.
-All spells are available from Colette at the College of Winterhold after completing the Restoration Ritual Spell quest.

Inspiration:

Clearly inspired by the famous spell from Harry Potter, however I also felt that there was a lack of unique, "good" based summons on the nexus and wanted to create something different for my own use. The fact that the patronus doesn't do any damage but still costs a significant amount of magicka allowed me to add other overpowered effects without creating something unbalanced, and I think it fills a niche role as a defensive style summon.

Creature Traits:

While all summons are invulnerable and have the same aura, they vary widely in size and speed. Faster summons are really good at chasing down distant enemies (think draugr deathlord archers) but can quickly leave you vulnerable if they chase an enemy too far away. Conversely, a slower patronus is much easier to stick close to but takes longer to reach and chase away distant undead.
A patronus that is large in stature can easily block spells and projectiles in tight spaces, but can make it harder for you to hit your enemies. A small summon lets you free-fire those thunderbolts, but will never protect you as the vampires and draugr that are not turned can just fire over them.
Pick the patronus that best suits your needs and your character

Ash Hopper
Speed: medium
Stature: small

Bear:
Speed: medium
Stature: large

Boar:
Speed: medium
Stature: medium/large

Dog:
Speed: fast
Stature: small/medium

Elk:
Speed: fast
Stature: large

Fox:
Speed: medium
Stature: small

Goat:
Speed: slow
stature: medium

Mudcrab:
Speed: very slow
Stature: small

Rabbit:
Speed: very fast
Stature: small

Wolf:
Speed: fast
Stature: medium

Compatibility:

-Should be compatible with all mods, unless they change vanilla magic effects. Virtually all mods create their own magic effects.
-Compatible with Ordinator and other perk overhauls, as long as they use vanilla turn undead keywords.
-Perks that increase spell effectiveness against undead, or restoration spell effectiveness will NOT affect patronus spells. This is intentional.
-Perks that apply when a turn undead effect is active WILL apply to patronus spells (see Ordinator perk "Crusader's Fire")
-I'm still really new to modding, so let me know in the comments if other issues or bugs are found, I may be able to find a solution.

Final Thoughts:

I put a lot of love into making this a reality, so please feel free to comment/make suggestions or post images/videos. I'm also happy to answer questions in the comments.