I don't know if anybody else said this before but the orange fire like aura radiating from the Totem Pokemon is the same aura raditating from the Pokemon about to use a Z-Move. So maybe Pokemon holding a Z-Stone (like Totem Pokemon) get a boost in a certain stat as well as the ability to use a Z-Move? This would also explain why Totem Pokemon are so large because of the energy emitted by the Z-stones. However this doesn't explain how Totem Pokemon are able to use Z-Moves as they look like wild Pokemon. Thoughts?