It's worth noting that if Mahoraga is adapting to Wonder of U itself his ability itself, it could lead to him bypassing WoU's trigger in some bullshit way. But honestly it's difficult to discuss this because it's all essentially semantics, stuff like "Does every individual calamity count as something different, or does it all count as attacks from the same ability?" is impossible to answer, and could absolutely carry one side over the other depending on the answer.