What the everloving fuck is going on. First Rita becomes a Guardian again then Lambert summons a dome of text then Zangetsu summons a literal tidal wave? Strange doesn't know what's going on but what he does know is that nobody's playing fair and this is all bullshit.

He remains in smoke form as the water pours into the arena and then almost instantly decides that feels weird and he doesn't want to experience that particular sensation ever again. He can't cast as smoke but he also can't really move through the water as smoke. So, against his better judgement, Strange turns back to his human form.

...and then instantly finds out he can't breathe. This is all so bullshit. Strange is straight up attempting to swim to the top of the wall of water so he can get some air and his mostly verbal spells can actually be of use.