OK, so weird rules question: how do you track commander combat damage for two commanders that each have partner and that meld with each other? When the melded commander does combat damage to a player, is that a third combat damage track, does it go towards the un-melded combat damage trackers, or does something else weird happen?
This is absolutely a strange rules question, since not a single card on Scryfall would seem to run into this scenario, but for Pride Commander, all commanders are given the partner keyword, so you can run into this case with commander partners like Fang, Fearless l’Cie and Vanille, Fearless l’Cie, both of which meld into Ragnarok, Divine Deliverance. Similarly, Gisela/Bruna.
Anyway, thanks for the help!
Meld cards all have the restriction of “own and control”, so while your scenario sounds fun, it’s unfortunately not possible (yet).
It’s text on the card, rather than a built in restriction, so in theory it could be possible in the future.
This is correct - all meld cards that exist have this requirement. It does not require that in the CR though as far as I can tell, so a theoretical future card might not have that restriction.
Also, I guess if you rule 0’d in ante cards for some reason, then sure.