Bottle of Possibilities

Equip {2}. Equip only to creatures with a
toughness of three or higher.
Equipped creature gets 0/-2: Search your library
and your graveyard for a noncreature nonland
card with a converted manacost of four or less
and play it withour paying its cost.
"Feed it with your life and see wonders beyond imagination spring forth."
—Bottler, ruler of chemicals