Protean Hydra 194 (Magic 2011 (M11))

This creature enters with X +1/+1 counters on it. If damage would be dealt to this creature, prevent that damage and remove that many +1/+1 counters from it. Whenever a +1/+1 counter is removed from this creature, put two +1/+1 counters on it at the beginning of the next end step.

NM - $8.10
LP - $6.50
MP - $5.00
HP - $3.30
DMG - $1.70