What is the command line arguments you need for magnet links?
(So that Phex will import using magnet URI)
Or, does Phex not support magnet links, but only Magma files?

I tried it like this:
[Phex] [magnet:...]

Phex opened, but it didn't process the Magnet Link, as it seems.
I think you need a command line in which in some way, the magnet link is specified.

So how should I form such a command to import magnet links ?