This may have been asked and answered already; if so, someone just link me to the thread please.
CBtC Illyrio allows you to play Attachments from opponents' discard piles as if they were in your hand. Say I have him in play and I play a Targ opponent's attachment, then it gets discarded. Normally it would return to its owners discard pile, but I use Griffs Response which reads:
After a Targ attachment you control is discarded from play, kneel one Influence to return it to your hand.
Can I put the attachment owned by my opponent into my hand? The test doesn't say "return it to its owner's hand" but normally you cannot put an opponent's card into one of your out-of-play areas.