I lay claim to shit gear zygarde geopolitics
Sheer Force Darm won't be very good w/o scarf, as while its flare blitzes and bolt strikes hit really hard with LO they are sucidal and any of the abundant fast mons in this meta can easily kill it. Since stall won't be all that common in this meta, Darm will have trouble doing its task if it had a life orb: wallbreaking.
Eruption isin't that much better than fire blast, especially with its rocks weakness. You would take any hit and fire blast would just be....better. I would honestly consider Zard X over Zard Y always, just because of the wallbreaking power. V-create + Overheat + Dragon Claw / Outrage + Coverage / Roost Charizard X will be common in this meta, and for good reason as it will be a really good wallbreaker, and outclassing zard-Y for my liking.
Ah :/
RIP in pieces Eruption Zard Y. Time to scrap that team lol