Phyrexian Hydra
Creature — Phyrexian Hydra, {3}{G}{G}
Oracle Text
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.