ଭାଗିଦାରୀ ଧ୍ୱନି

You know what, pokemon cannot mega evolve without a stone or more auurately a trustworthy trainer. Even there is no exception, now you can tell me about ash's greninja can mega evolve or bond evolve without stone but as of definition, there is a trainer. Others can tell about Diancie but there is another perception on it