My View of xodusprime\'s Free turn combo

Imprint — , : You may exile an instant or sorcery card with mana value X from your hand. At the beginning of your upkeep, you may copy a card exiled with this artifact. If you do, you may cast the copy without paying its mana cost.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) You can't lose the game this turn and your opponents can't win the game this turn. Until end of turn, damage that would reduce your life total to less than 1 reduces it to 1 instead.

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Imprint — When this artifact enters, you may exile an instant card with mana value 2 or less from your hand. , : You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.