Dik's Pitts

This spell costs an additional {2} or 2 life to cast
for each time it's been cast from the Tattor Zone.
At the begining of your end step place a -1/-1
counter on up to 2 target creatures.
At the begining of each end step each
opponent loses 1 life.
You have hexproof as long as a creature has a
-1/-1 counter on it.