Whitebeard's Conviction

As long as you control Whitebeard, other
Whitebeard Pirates gain Shroud.
When one or more of your opponent's creatures
dies you may exile the top 4 cards of your library.
Exile any Non-creature spells you find this way
and put the rest on the bottom of your library.
During your upkeep choose 1 card from the
exiled cards and put it in your hand.