Greater Desert Hellion

When Greater Desert Hellion enters the
battlefield you get one Intensity Counter.
Menace
At the beginning of your upkeep, sacrifice
Greater Desert Hellion unless you discard a card.
If you discard a card this way, you get one
intensity counter.
When Greater Desert Hellion leaves the battlefield, you may discard your hand. If you do,
draw a number of cards equal to the number of intensity counters you have.