Joel, The Master Mind

When Joel, The Master Mind enters the battlefield, you may search your library for a card,
put it in your hand, then shuffle.
At the beginning of your upkeep, exile the bottom
card of each players library. You may play those
cards this turn, and may spend mana as is it were
mana of any color.
Whenever you play a card from exile, draw a card
and gain 2 life.