Actually you do, and not just do you have to prove it to me, but you have to prove it to literally everybody on this forum.
Because you aren't just making a claim that flies in the face of science. But one that would require actual magic.
Biomagnetism isn't magic, dude.
There are animals that can sense magnetic fields, such as migrating birds. There's evidence that even humans have some degree of this ability.
I recall reading somewhere that certain fish can even sense each other by their magnetic fields.
Not that I pretend to know what the real deal is with these stories of people getting magnetic patches on their bodies after being injected with the Pfizer "vaccine" - but one can see what it could be... iron from their blood, becoming aligned somehow as a side effect of the spike proteins. Those have been known to cause micro-clotting.
Rejecting something you don't understand out of hand and calling it "magic"... if everyone behaved like that humanity would still be living in caves and hitting things with rocks.