Phyrexian Crusader

Oracle Text

First strike, protection from red and from white

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Card Rulings

6/1/2011 If Phyrexian Crusader blocks or is blocked by a creature without first strike or double strike, the damage dealt by Phyrexian Crusader results in -1/-1 counters that will affect how much damage the other creature assigns (if it's still on the battlefield).