Aye, that sucks. I burnt through seven stones today on stamina and derping through Mythical, but now that I've done it I realized I'm not even in that much -need- for him. With the buff he'll be really solid, but it's another light monster I have to feed when I already have to distribute light exp to Valkyrie and Regulus.
If I hadn't invested so thoroughly in TAMADRApurin I probably would have given Takeminakata that experience, though.