From the ritualized bonewalkers of Morrowind to the decaying zombies of Oblivion, zombies are monstrosities. Skyrim introduced actual reanimation, a very interesting gameplay mechanic, but it causes the zombies to lose the appearance of being undead. This mod returns that undead-ness by giving all reanimated zombies a unique visual effect; perfect for conjurers, and necromancer hunters alike!

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Description
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Binding your soul to a corpse--giving it life and movement--puts a strain it, eventually dissintegrating the zombie, when the spell ends. Now this strain is immediately visible, giving zombies more visual variety and a more undead appearance.
-Dynamically adds a decaying/dissolving skin effect to all summoned NPC zombies, including yours and your enemies
-Works on zombies of all NPC races (Nord, Khajiit, Dark Elf, etc.), but not undead races(i.e. vampires) (Skeleton models for non-human races made by PROMETHEUS)
-Works on zombies raised with spells from DLC or mods
-Variety of hole-pattern effects, with (slightly) varying sizes, depending on ownership of the "Dark Souls" perk
-Minimal use of scripts: should be safe to uninstall with no repercussions (However, see safe uninstall insctructions below)!

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Requirements
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Mostly NONE!

However: this mod may cause the brawl bug: it is recommended that you download the "brawl bug patch plugin" mod:
(http://skyrim.nexusmods.com/mods/24020/) (If you don't wan't to download it, see instructions below)

Some mods may require special steps to ensure compatibility (see instructions in section below)

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Uninstall
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No major harm should be causes by improper install, however the proper, and safest uninstall procedure is:

-Enter the console command "help US 3". You should recieve a list of variable names and their values including:
USApplyToCorpse
USApplyToUndead
USEnablePerk
USUseFXCloak
USUsePerkCloak
-Set all of these to 0, using the console command 'set <VarName> to 0'
eg.'set USApplyToCorpse to 0'
'set USApplyToUndead to 0'
'set USEnablePerk to 0'
'set USUSeFXCloak to 0'
'set USUsePerkCloak to 0'
-Kill all summoned undead in your cell, or wait for the effects to expire
-Wait 24 in-game hours (for good luck)
-Remove from your load order

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Compatibility/Bugs
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-The holes are an FX, and may be temporarily overridden by other FX from spells (eg. snow/wet effects from mods like Wet and Cold and Frostfall)
-It should work with any reanimation spells added with mods or DLC, and shouldn't conflict with any mods, except:
-If using another mod that alters the "Dark Souls" perk (e.g. SkyRe), this mod might overwrite that mods changes, to avoid this:
-Load my mod above the other in the load order
-Open the console and enter the command "set USEnablePerk to 0"
*if the other mod alters the spell aplied by "dark souls", but not the perk itself, this isn't necessary, this mod and the other should run in harmony
*Disabling the perk won't majorly affect this mod; the only change will be that vampires and other undead won't recieve the FX

- May not work completely with 'Invested Magic'; Sorrien has made a compatibility patch between these two mods, and is keeping me updated on that situation
Sorrien's 'Undead FX and Invested Magic' Compatibility Patch: (http://steamcommunity.com/sharedfiles/filedetails/?id=143294286)

This mod may cause the brawl bug, (A bug where your opponent in a brawl act like you broke the rules, turning the friendly fisticuffs, into a fight to the death)
-it is recommended that you download the "brawl bug patch" mod (http://skyrim.nexusmods.com/mods/24020/)
-If you do not wish to download the brawl bug patch, the part of this mod that causes the bug can be disabled, temporarily:
-Open the console and enter the commands "set USUsePerkCloak to 0" and "set USUseFXCloak to 0" beforehand
-Reset them after the brawl with "set USUsePerkCloak to 1" and "set USUseFXCloak to 1"

If you find any bugs, be sure to make a comment and tell me, so I can fix it as fast as possible, and please be specific; what reanimation spell you used, what other mods you are using, what was happening when the bug happened, and whatever other information you have is all useful

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Update Details
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V3:
Features:
-Dissolve FX will remain on corpses which are left over (such as thralls, or zombies summoned by the ritual stone power)
-Added version of the FX that will work on player
(type 'help "Living Undead FX" into console, then 'player.addspell <CODE>', with whatever code ID it gives you)

Behind The Hood:
-All FX are now treated as an ability, rather than some as a concentration spell
-Undead-Dissolve-FX will re-apply if a spell is cast on the Undead
-Underskin will automatically re-equip if it becomes unequipped

V2:
- Fixed the FX-script, so that "cleanup" when the effect ends actually happens
- Removed the check for "MagicSummonUndead" keyword; should now work with thralls, soul tear, and other non- disintegrate-on-death zombies
- Cleaned up the condition checks in general
- Added FX application via "perk" (a 'behind the scenes' perk, using one of skyrims built-in perk archetypes)(check above section for details on maintaining combatibilty)
- Mad various Parts toggleable via console commands

Future Plans: Add More Dissolve/Hole Patterns, Fit the Elf Skull a bit more 'snuggly', add laceration/wound type effects (as people have requested), add FX effect as an enchantment

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Thanks
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PROMETHEUS -- Big Thanks for permission to use beast skeleton models
(http://steamcommunity.com/profiles/76561197985771206/myworkshopfiles/?72850)
Nexus:(http://skyrim.nexusmods.com/users/88348)

Sorrien -- Thank you for keeping me updated on compatibility and for your patch (and for making it so quickly)

Check out:
PROMETHEUS' beast skeleton mod: (http://steamcommunity.com/sharedfiles/filedetails/?id=116563547)
Nexus Version:(http://skyrim.nexusmods.com/mods/28957)

Sorrien's compatibility patch for 'Invested Magic': (http://steamcommunity.com/sharedfiles/filedetails/?id=143294286)
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Tools and Tutorials Used
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Hanaisse tutorial for the roundabout Blender-to-Skyrim export process
(http://tesalliance.org/forums/index.php?/tutorials/article/111-creating-skyrim-armor-in-blender-part-1-understanding-skin-partitions-nifskope/)
Blender -- Free 3D modelling program
(http://www.blender.org/)
Niftools -- Developers of blender nifscripts and nifskope
(http://niftools.sourceforge.net/wiki/NifTools)