Assassin of House Dimir

Transmute {u}{b} ({u}{b}, Discard this card: Search your library for a card with the same converted mana cost as this card, reveal it, and
put it into your hand. Then shuffle your library. Transmute only as a sorcery.)
Assassins of House Dimir are unpredictable and deadly, but only few know, what they really do. They have their own image of order.