Mirrored Lake

{t}, add {u} or {b} to your mana pool.
Sacrifice Mirror lake then search your library for a horror with a converted mana cost above 4, reveal it, then put it in your hand.
While traversing Mirrored Lake, it is important to remember that there are no living animals in Mirrored Lake. The bumps you hear under your boat is not fish nor is it a monsters, they couldn't survive in Mirrored Lake.