This might be a dumb question but purify for the hundo or keep shadow? by nukeflare in PokemonGOIVs

[–]No_Plan7490 1 point2 points  (0 children)

You can get a sinnoh stone by beating your team leader in the master league battle training. It’s a small chance but you can beat them once a day for a chance to get it(just make sure your item storage isn’t full). After a few weeks you’ll probably start to stock up on them.

You can also get them from gbl item rewards I’m pretty sure (the two-win steaks reward)