Lembrus, REM Lord

Flying, deathtouch, drowsy
Whenever Lembrus deals combat damage to
a player, shuffle. Then reveal the top card of your library, you may cast that card without paying its
mana cost.
Whenever Lembrus deals combat damage to
a planeswalker, look at the top three cards of your library. Put one of them into your hand and the
rest on the bottom of your library in a random
order.