Momonga, Vice Admiral

When Momonga enters the battlefield you may
search your library for an instant or sorcery card
with converted mana cost 3 or less, reveal it and shuffle your library. Put that card into your hand.
Transmute {1}{u}{u}{u} (When you cast this card for
its transmute cost, discard this card and search your library for a card with the same converted mana
cost, reveal it, and put that card into your hand.)