Then you can pick up things that would usually attract to a magnet such as an iron rod.
(you; can pick up; things that would usually attract to a magnet such as an iron rod; T:Then) (things; would attract; to a magnet such as an iron rod; T:usually)
you things
can pick up would attract
things that would usually attract to a magnet such as an iron rod T:Then
to a magnet such as an iron rod T:usually