Rebound "Rebound" means "If this spell was cast from your hand, instead of putting it into your graveyard as it resolves, exile it and, at the beginning of your next upkeep, you may cast this card from exile without paying its mana cost." Once the exiled creature returns, it's considered a new object with no relation to the object that it was
Lovecraft's Cthulhu Mythos
Red-hot embers illuminate the pitch-black night and sparks flare into an inferno as Charizard ex surges forth with newfound powers of darkness
#4 Arceus V SA (112/100) ~$64 Arceus V SA (112/100) is the thematic centerpiece of the set Arceus is literally in the set name but it trades at 8,980 (~$64), significantly less than the Charizard V SA
If you can land another effect like Darksteel Plate to give this creature Indestructible, you will be able to make your whole board impenetrable, but this is hard to pull off