I suppose people will always complain whatever you do. Anyway, I'm happy to help with grammar checking whenever stuff is ready. For now I'll just point out the few nasty words/phrases that jumped out at me:
- "wreck stall apart" - confuses wreck with rip, makes no sense.
- "nonimmune" - I question that this is a word at all, but it definitely doesn't mean what you think it does.
- "Arceus-Dragon can run a terrifying Swords Dance set or a Calm Mind set that few Dragon-types can claim" - every arceus can run a calm mind or SD set. I don't know what you mean by "few dragons can claim".
- "The oldest Pokemon Arceus returns and becomes the very qualities of the rocks themselves through the Stone Plate". Arceus is becoming qualities?
- "Poison-type attacks are futile against His durability" very strange use of durability.