Jekkrus Crucible

At the beginning of your upkeep, reforge 3
(You may exile another permanent you control.
If you do, reveal the top 3 cards of your library
and put a permanent card with equal or lesser
mana value than the exiled card onto the battlefield. Put the other revealed cards at the bottom of your library in any order.)
When Jekkrus Crucible enters exile from anywhere, shuffle it into your library.