How do I add Deltas to battle simulator?

Happy to help if its possible

Well, most people are using another client now, i don’t have the link atm, but if you really wanna update this one, you can find the code in one of the announcements iirc.

http://77.162.113.75:8001/?~~77.162.113.75:8000

here is the client almost evryone is using

Thanks! Is there a format that allows any type of battle?

My friends and I tried recreating our teams but Gen 6 Insurgence OU didn’t allow them to use a phsyic gem or their Gothita’s shadow tag ability.

delta draft league/natdex

Insurgence OU allows Gems, I would use Gen 6 Custom Battle, which has no rules. You could also use /challenge (user) [Gen 6] Custom Game @@@ +Future, which allows all Gen 7+8 mons and moves, wth Gen 6 mechanics.