Well in that situation oryx still wins, since he is paracausal, there might be a situation where the stones glitch out when trying to destroy him. He is not bound by the laws of the universe witch the stones command. And if he is in his throne world when using the stones, even if they could work in there, they would still be broken since they have to follow the logic of the sword witch makes them ineffective at killing higher beings.
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Thank you for not saying "huh huh, thanos wins easy because stones OP!" as well as understanding what paracausality is.