Another icon recovered. The first level the Spirit Wolf unit and ability seems to have this purple filter trying to reference the original Classic version, but the next two icons for said unit and ability don't have the same filter. Still, neither the purple-filtered icon and the actual wolf models look alike in both Reforged and Classic graphics.

Here are the following directories you must paste in the '_retail_' (without the single quotation marks) folder of the game:
 • ReplaceableTextures\CommandButtons\BTNSpiritWolf.dds
 • ReplaceableTextures\CommandButtonsDisabled\DISBTNSpiritWolf.dds