shop, requires playing on the download version as the browser/older versions dont have it yet.
devs are holding back on updating the browser 1 because something to do with so many people will lose their saves if they didn't back them up (which is easy to do but people dont read well ;p)
also i didnt think to mention it in prior reply, but i did on anothercomment i left.
splash damage mons like corsola (also top tier mon btw) will cause invisible pokemon to turn visible if they target an already visible mon with an invisible close enough to receive the splash damage