if i take a piece of exodia with exchange and then flip fiber jar dose that piece come to my deck or his

thanks

it goes back to the owner of the peice Exodia, if you take it with Exchange, it will go back to him

If you take something of the opponent's like with Exchange, Graverobber, Double Spell, etc, it will NEVER go to your own graveyard, Removed from play area, or your own deck unless some sort of effect told you to. The same goes for if the opponent did it to you

well, with Double spell, there spell card never leaves there graveyard, you just usee the effect, not the card it's self. (just thought you should know)

Actually i'm pretty sure I saw a ruling that said you CANNOT use Fiber Jar, etc. if you have an Opponent's Card in your Hand or Vice-Versa.

I got this, guys. Here's the ruling from the official page

All cards on the field, in all players' hands, and in the Graveyard go back to the OWNER'S decks. Meaning if you started the Duel with a card in your deck, but it ends up with your opponent thanks to something like Graverobber or Exchange, it still goes back to your deck.

Metra Mage: If you have found such a ruling, please show us something more credible.

As far as I know, if you hold an opponent's card from a result of "Exchange", you are more than free to use it, even if it is "Fiber Jar"

Right now the only card immune to Fiber Jar I believe is Parasite Paracide when it is in the opponent's deck. If a card from your opponent's deck is ever in your hand or field, and it has to return to the hand, it goes to the orginal owner, and that is the person who brought it to the duel.

Actually i'm pretty sure I saw a ruling that said you CANNOT use Fiber Jar, etc. if you have an Opponent's Card in your Hand or Vice-Versa.

Replace "Fiber Jar" with "Monster Recovery"