Neralin, Nightmare King

Nightmare creatures you control get +1/+0 and
have Rage. (If a creature with Rage would die,
instead it deals damage equal to its power to any
target. Then exile it.)
If you would draw a card, instead put the top two
cards of you library into your graveyard, then
return a card from your graveyard or exile to your
hand.
The penultimate pinnacle of fear.