Infernix

Partner with Aube, the reborn (When this
permanent enters the battlefield, target player may put
Aube, the Reborn into their hand from their library,
then shuffle.)
Trample.
{p/r}: Regenerate Infernix.
{r}{r}: Sacrifice an undestructible artifact, you can return up to 3 target instant or sorcery spells
from your graveyard to your hand.