Fun, fan service film (minor spoilers)
It is entertaining, but I wouldn't even call it comic book film, more like a parody.
If Cassandra could be killed when she was reading someone's mind she would have died long time ago. And I hardly think she would have even a second hesitation to kill juggernaut and destroy his helmet.
Sling rings allow wizards to travel through space, not time, not jumping between timelines, that is already established in "Doctor Strange in the Multiverse of Madness", Dr Strange could not do that, only that Chavez girl can.
For that you need time stone (I wasn't even sure about that since Dr Strange had the time stone), or TVA.
The mask of wolverine is really lame. I guess so they could use more stunt doubles.