Sack of Giant Ideas

{4}, {t}: Roll a d20.
1 | Sacrifice three permanents you control.
2-5 | Create 4 treasure tokens.
6-9 | Gain 2d4+2 life.
10-12 | Create a 2/2 black zombie creature token.
13-16 | Search your libary for a land, put it into
the battlefield tapped, then shuffle your deck.
17-19 | Draw 2 cards.
20 | Gain control of target permanent.