Spell doens't use correct buff

[Kelestin]

So I created a hero spell based on the anti-magic shell from Undead Banshee. Everything was fine until the spell's buff. For some reason, the new spell keeps using the original buff of anti-magic shell instead of the new buff I created, though I have changed the buff index in the spell. What did I do wrong?

image below if you don't understand what I mean

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[Uncle]

I'm not entirely sure if this a solution but maybe try copying and pasting both of those Anti-magic Shell buffs and editing them to look like Anti Magic Seal. Test each one out. Maybe try adding both at once. If all else fails you can at the very least replace the original buffs.

 

[Pyrogasm]

If you deleted all of the art from the buff it's possible it's using the default buff art in absentia. That does happen sometimes.