Situations/Clarification
From Polarity
Converting Opponents Pieces
You cannot convert your opponents standing pieces to Foundations of your own colour. When a fault of this kind happens, you resolve the action piece (usually by putting it back in your stack). Your turn ends and your opponent then gets to capture this piece as if capturing a tower.
Mobile Foundations
Foundations can move up to one disc diameter as part of a legal play without causing a fault.