A multi-targeted attachment is put back into your deck when the first attached instance (the one that doesn't say "copy" when you click on it) is discarded. Thus, you can draw a card even though it's still attached to someone. example: Cast Mass Frenzy when your first character is holding Arrogant Armor. Mass Frenzy will be attached to your remaining characters, but also return to your deck when it is discarded by Arrogant Armor. This is mostly relevant for Quick Draw, where your decks are small enough for this to matter occasionally.