I browsed through all the other Unown G questions, but I couldn't find this one yet. Guard: Once during your turn (before your attack), if Unown G is on your Bench, you may discard all cards attached to Unown G and attach Unown G to 1 of your Pokemon as a Pokemon Tool card. As long as Unown G is attached to a Pokemon, prevent all effects of attacks, excluding damage, done to that Pokemon. This power doesn't say you can't attach Unown to a Pokemon that doesn't already have a Pokemon Tool attached to it. I'm fairly sure this is not allowed anyway, but I'm just checking. Can you attach Unown G to a Pokemon that already has a Leftovers attached?