Aldrich, Saint of the Deep

When Aldrich, Saint of the Deep enters the battlefield, search target player's library or
graveyard for a legendary creature card and exile
it with a deep counter on it.
Aldrich has the abilities of all cards in exile with
deep counters on them.
{w}{u}{b}, Sacrifice a legendary creature: Return
Aldrich from your graveyard to the battlefield
tapped.