Sentinel of Secrets

Shroud
Sentinel of Secrets can't be blocked as long as
you control an artifact or enchantment.
Whenever Sentinel of Secrets deals combat
damage to a player or Planeswalker, scry 2.
(Look at the top 2 cards of your library, then
put any number of them on the bottom of
your library and the rest on top in any order.)
Don't even think around them.