In expanded you could Ho-Oh EX then ninja boy into the Amazing Rare Yveltal. then just a double colorless energy picks up the ko. Kyogre also seems very good in expanded as well as you could chain the 80 spreads.
If Ditto VMAX can copy gx attacks, it will be a good counter to adp zacian, being able to use altered creation gx without needing adp. Also, I'm so gonna make an yveltal deck! maybe yveltal/ditto vmax, as altered creation+free knockouts is too broken to not be played!
Edit: I hope adp has an AMAZING DEATH (just dont bring your cards to a funeral)
Kyogre ADP could be interesting. If you use altered creation then Kyogres attack twice then all their one prizers and Dedennes are gone. With the new tool (I forget the name) it could snipe anything with less than 220 HP. The tricky part is if it's better to do AC, then ultimate ray, then two attacks with Kyogre or if Zacian is just the better partner.
It's possible some of the Amazing Rares could work in Expanded with access to more multi-type special energy. There's also the Smeargle from Breakthrough and Rainbow Paintbrush (who ever thought we might use those cards lol).