Cruel Reality

Enchant player
At the beginning of enchanted player's
upkeep, that player sacrifices a creature or
planeswalker. If the player can't, he or she
loses 5 life.
You will reap what you sow. For each sin, that is
another stitch into your sown web of self-righteousness.
You may not feel it now, but when Death seeks you,
it will be cold.