1. The copies of lord of extinction would be 2/2 instead of */* so they wouldn't get the bonus.
2. The copies would be */*'s so they would both be 6/6's (because the original lord of extinction & saw in half would both be in graveyard in Addition to the other 4 cards from the beginning)
3. The copies would be 2/2's, but they still get the +X/+X for each card in graveyards. So they would both be 2/2's with +6/+6 (because the original lord of extinction & saw in half would both be in graveyard in Addition to the other 4 cards from the beginning)
(NOTE, For all these examples there will be 4 cards in graveyards)
1. The copies of lord of extinction would be 2/2 instead of */* so they wouldn't get the bonus.
2. The copies would be */*'s so they would both be 6/6's (because the original lord of extinction & saw in half would both be in graveyard in Addition to the other 4 cards from the beginning)
3. The copies would be 2/2's, but they still get the +X/+X for each card in graveyards. So they would both be 2/2's with +6/+6 (because the original lord of extinction & saw in half would both be in graveyard in Addition to the other 4 cards from the beginning)