Doesn't appear to work with weaken, wither or wasting disease/rot. Here's a log that proves wither, look at the dexterity throughout for a reference.


Witrumton the Grand Master of Changelings, Magistrate of
Voralian City
-------------------------------------------------------------------------------
Level : 51 Sex : male Race : svirfnebli
Ethos : Orderly Align : Neutral Class : shapeshifter
Practices: 2 Trains : 3 Hometown : Voralian City
Exp : 518149 To Level : 19101 Sphere : Truth
Age : mature, 178 years old (102 hours)
Hit Point: 1015 /1015 Mana : 220 /1002 Move : 345 /627
Str : 20(3 ) Int : 18(18) Wis : 22(21)
Dex : 19(12) Con : 21(22) Chr : 17(19)
Carry # : 28/28 Weight : 266 lb 14 oz (Max 137 lbs)
Gold : 11 Silver : 24 Copper : 15
Wimpy : 360 hp Morale : Moderate Position : Standing
Hitroll : 3 Damroll : 2
AC pierce : -27 Very well armored AC bash : -28 Very well armored
AC slash : -39 Very well armored AC magic : 34 Somewhat armored
AC element: 18 Armored
vs Spell : Barely protected vs Paralysis: Barely protected
vs Breath: Somewhat protected vs Mental: Not protected
You are definitely hungry.
You are affected by:
Skill: 'vigilance' for 47 hours.
Skill: 'vigilance' for 47 hours.
Commune: 'weaken' modifies strength by -12 for 22 hours.
Physical effect: 'wither' modifies dexterity by -10 for 4 hours.
Physical effect: 'wither' modifies strength by -20 for 4 hours.
Skill: 'guard call' for 1 hours.
-------------------------------------------------------------------------------

<1015/1015 220/1002 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> The power of the weaken commune is unaffected.
The magic of the wither spell is unaffected.

<1015/1015 200/1002 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> can
The power of the weaken commune is unaffected.
The magic of the wither spell is unaffected.

<1015/1015 180/1002 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> rem all
sc
You stop using a copper-bound tome.
You can't remove a runed bronze collar.
You stop using a sandy-brown desert cloak.
You stop using a pitch-black ring.
You stop using a pitch-black ring.
You stop using spiked mask of darkened bronze.
You stop using a skin from the snow leopard.
You stop using a pair of black steel gauntlets.
You stop using a captain's hat.
You stop using the belt of life.
You stop using a set of arborian leggings.
You stop using a bracelet of golden chain.
You stop using a bracelet of golden chain.
You stop using a phylactery of fortitude.
You stop using a pair of troll-hide boots.
You stop using a gilded gold breast plate.

<1015/720 180/927 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> Witrumton the Grand Master of Changelings, Magistrate of
Voralian City
-------------------------------------------------------------------------------
Level : 51 Sex : male Race : svirfnebli
Ethos : Orderly Align : Neutral Class : shapeshifter
Practices: 2 Trains : 3 Hometown : Voralian City
Exp : 518149 To Level : 19101 Sphere : Truth
Age : mature, 178 years old (102 hours)
Hit Point: 1015 /720 Mana : 180 /927 Move : 345 /627
Str : 20(3 ) Int : 18(18) Wis : 22(20)
Dex : 19(9 ) Con : 21(22) Chr : 17(17)
Carry # : 28/27 Weight : 266 lb 14 oz (Max 137 lbs)
Gold : 11 Silver : 24 Copper : 15
Wimpy : 360 hp Morale : Moderate Position : Standing
Hitroll : 0 Damroll : -1
AC pierce : 91 Defenseless AC bash : 91 Defenseless
AC slash : 91 Defenseless AC magic : 91 Defenseless
AC element: 94 Defenseless
vs Spell : Not protected vs Paralysis: Not protected
vs Breath: Not protected vs Mental: Not protected
You are definitely hungry.
You are affected by:
Skill: 'vigilance' for 47 hours.
Skill: 'vigilance' for 47 hours.
Commune: 'weaken' modifies strength by -12 for 22 hours.
Physical effect: 'wither' modifies dexterity by -10 for 4 hours.
Physical effect: 'wither' modifies strength by -20 for 4 hours.
Skill: 'guard call' for 1 hours.
-------------------------------------------------------------------------------

<1015/720 180/927 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> eq
You are using:
<worn on finger> ---
<worn on finger> ---
<worn around neck> a runed bronze collar
<worn around neck> ---
<worn on body> ---
<worn on head> ---
<worn on face> ---
<worn on legs> ---
<worn on feet> ---
<worn on hands> ---
<worn on arms> ---
<worn about body> ---
<worn about waist> ---
<worn around wrist> ---
<worn around wrist> ---
<mainhand wielded> ---
<worn as shield> ---

<1015/720 180/927 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> 1
You flicker and blur into the shape of a venomous cobra.
You are filled with the resiilence of the hyena.

<1015/720 170/927 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)> sc
Witrumton the Grand Master of Changelings, Magistrate of
Voralian City
-------------------------------------------------------------------------------
Level : 51 Sex : male Form : cobra
Ethos : Orderly Align : Neutral Class : shapeshifter
Practices: 2 Trains : 3 Hometown : Voralian City
Exp : 518149 To Level : 19101 Sphere : Truth
Age : mature, 178 years old (102 hours)
Hit Point: 1015 /720 Mana : 170 /927 Move : 345 /627
Str : 18(3 ) Int : 17(17) Wis : 15(13)
Dex : 23(15) Con : 23(23) Chr : 16(16)
Wimpy : 360 hp Morale : Moderate Position : Standing
Hitroll : 23 Damroll : 14
AC pierce : -410 Divinely armored AC bash : -410 Divinely armored
AC slash : -410 Divinely armored AC magic : -410 Divinely armored
AC element: -410 Divinely armored
vs Spell : Somewhat protected vs Paralysis: Protected
vs Breath: Barely protected vs Mental: Not protected
You are definitely hungry.
You are affected by:
Skill: 'vigilance' for 47 hours.
Skill: 'vigilance' for 47 hours.
Spell: 'resilience of the hyena' for 0 hours.
Commune: 'weaken' modifies strength by -12 for 22 hours.
Physical effect: 'wither' modifies dexterity by -10 for 4 hours.
Physical effect: 'wither' modifies strength by -20 for 4 hours.
Skill: 'guard call' for 1 hours.
Physical effect: 'form bonus' modifies constitution by 2 for -1 hours.
Physical effect: 'form bonus' modifies dexterity by 2 for -1 hours.
-------------------------------------------------------------------------------

<1015/720 170/927 345mv 19101tnl(0.77%)(12 PM)(civilized)(indoor)>

Autosaving.
The resilience of the hyena leaves you.
You can once again perform a greater enliven.

<720/720 156/927 401mv 19101tnl(0.77%)(1 PM)(civilized)(indoor)> sc
Witrumton the Grand Master of Changelings, Magistrate of Voralian
City
-------------------------------------------------------------------------------
Level : 51 Sex : male Form : cobra
Ethos : Orderly Align : Neutral Class : shapeshifter
Practices: 2 Trains : 3 Hometown : Voralian City
Exp : 518149 To Level : 19101 Sphere : Truth
Age : mature, 178 years old (102 hours)
Hit Point: 720 /720 Mana : 156 /927 Move : 401 /627
Str : 18(3 ) Int : 17(17) Wis : 15(13)
Dex : 23(15) Con : 23(23) Chr : 16(16)
Wimpy : 360 hp Morale : Moderate Position : Standing
Hitroll : 23 Damroll : 14
AC pierce : -410 Divinely armored AC bash : -410 Divinely armored
AC slash : -410 Divinely armored AC magic : -410 Divinely armored
AC element: -410 Divinely armored
vs Spell : Somewhat protected vs Paralysis: Protected
vs Breath: Barely protected vs Mental: Not protected
You are definitely hungry.
You are affected by:
Skill: 'vigilance' for 46 hours.
Skill: 'vigilance' for 46 hours.
Commune: 'weaken' modifies strength by -12 for 21 hours.
Physical effect: 'wither' modifies dexterity by -10 for 3 hours.
Physical effect: 'wither' modifies strength by -20 for 3 hours.
Skill: 'guard call' for 0 hours.
Physical effect: 'form bonus' modifies constitution by 2 for -1 hours.
Physical effect: 'form bonus' modifies dexterity by 2 for -1 hours.
-------------------------------------------------------------------------------

You have to be in form with the resilience up when you are being affected by wither for it to have reduced effectiveness.

Just going from normal to a shifted form isn't going to change anything regarding your affects.

Where it wasn't working properly on spells/supps. FNCR.

nt