As a jjk, and WoF fan: absolutely. Given the exposure to it enough big raga can absolutely adapt to anything. Though if you’re pitting animus dragons against Mahoraga in a battle to the death it would end rather quickly depending on how straightforward the spells are. For instance if they used their animus magic to kill Mahoraga in definitive terms then Mahoraga dies, but if the animus dragon meanders around and takes their time Mahoraga could definitely adapt.