Phyrexian Hydra 85/155 (Mirrodin Besieged)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) If damage would be dealt to this creature, prevent that damage. Put a -1/-1 counter on this creature for each 1 damage prevented this way.

NM - $8.70
LP - $6.90
MP - $5.20
HP - $3.50
DMG - $1.80