Salvager of Orazca

Flash (You may cast this spell any time you could
cast an instant.)
Consonance (When you cast this spell, if there is
another spell with the same mana value on the stack,
copy it. The copy becomes a token.)
When Salvager of Orazca enters the battlefield,
you may discard a card. If you do, return up to
one target instant, sorcery or Merfolk card from
your graveyard to your hand.