Faithless Alchemist

When Faithless Alchemist enters the battlefield, choose up to one card in your
hand. Until end of turn, you play with that card revealed. While it is revealed this way,
it has Transmute {2}{r}. (Any time you could
cast a sorcery, you may pay a card's transmute cost and discard it to search your library for a
card with the same mana value, reveal it, put
it into your hand, then shuffle.)