Ryoshun's Guidance Reaction: When another player's action would target one of your cards, discard this card: Choose another of your non-Stronghold cards at the same location. The action targets it instead, if legal.
A Stain Cleansed Battle: Choose your performing unbowed Magistrate, target an enemy card without attachments or an enemy unit, and pay Gold equal to the card or unit's total Gold Cost minus 2: Destroy it.
I target an opposing unit with "A Stain Cleansed", he wants to redirect this with Ryoshun's Guidance, what are the possible new targets:
A) Other units B) Cards without attachments in other units C) Cards without attachments in the targeted units