Arajtti, the Littjara

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
When Arajtti, the Littjara enters the battlefield,
you may exile a creature card from your graveyard
with mana cost less than the mana spent to cast Arajtti, the Littjara. If you do, Arajtti, the Littjara enters the battlefield as a copy of the exiled
creature and isn't legendary and creatures you control, creature spells and creatures you own
that are not on the battlefield are the exiled card's
type i