I'll make it short this time:
• Go second
• Arven finds Buddy Buddy Poffin and TM Evo
• Grab your 2 Beldums with your BBP
• If you have nest ball grab Zamazenta unless you already have one benched in which case grab Rad. Greninja
• Use TM Evo with active and then follow up your opponent KOing your active using Zamazenta while building
• Build up a Dialga Vstar, take a KO (or do a hit) with Star Chronos, then boss up whatever you want to nuke with Metal Blast
• Mew ex for a bit draw support and some attack copying shenanigans.
Enjoy the deck!