Book, Bosch's Secretkeeper

At the beginning of your upkeep, if you control a
Bosch planeswalker, roll a d20.
1-10 | Tap Book, Bosch's Secretkeeper.
11-15 | Investigate.
16-20 | Search your library for a card, put it into
your hand, then shuffle your library.
{2}, Sacrifice this artifact: Draw a card