Hatter's Demonic Dice

Roll a six-sided die. If you roll a 1, you lose 4 life.
Otherwise, search your library for a creature
with converted mana cost equal to the result
and put it onto the battlefield. Shuffle your
library, then exile Hatter's Demonic Dice.
If you fail to find a creature, you lose 4 life.
"If you don't play, you can't lose."