>>14936972But you're still fucked for anything you need to make pre-gen 6.
Seismic toss Blissey is only legal in Emerald. A legit Blissey with seismic toss requires you to trade a Blissey to Emerald from FRLG since you can't catch them in RSE, breed it, get it to perfect stats, teach it seismic toss, transfer it through the safari to a DPP cart and then transfer it to BW/BW2 to then finally Pokebank it to XY