Theory WITH SPOILERS: The way to kill Pandora is using the great rabbit. Pandora can alter a fact about reality on her favor an nulify it to make it so she doesnt die when she is killed. But she would be vulnerable if that something keeps happening over and over by a force of nature as strong as Pandora. So she can negate being bitten by a rabbit but not by a dozen rabbits at the same time, simply it turns 12 into 11. And unlike the whale we see the rabbit is still alive so it can be respawned by Betty at any time she wishes.
@@pranaysharma96 the witch cult is able to direct the beasts by luring them, not control them. To control them you need to break their horns. For example Roswald was able to lure the rabbit by casting a wide range magic for a long period of time.
that's a good theory but Pandora might be able to control the Great Rabbits and also the fact that Beatrice cannot use strong magic after this battle she basically just empty a 400 years of mana reserve she has in that fight alone and will need to rely on Subaru for Mana but since he has both a weak connect to mana and his gate being broken well... it takes almost every Mana Subaru produce just to keep her physical body
