Nevinyrral the Weaponizer

{w}{b}, {t}, Sacrifice an artifact, creature, or enchantment: Exile target nonland permanent.
{u}{r}. {t}, Sacrifice an artifact, creature, or enchantment: Reveal the top card of your library.
If it's a nonland card, until end of turn, you may
cast that card.
Whenever a permanent you control leaves the battlefield, you may search your library for a permanent of the same type, reveal that card,
shuffle your library, then put that card
on top of it.