Crusader (enchant)

Permanently enchant a melee weapon so that often when attacking in melee it heals for 75 to 125 and increases strength by 100 for 15 seconds. Both healing and strength bonuses have great value for tanks and rogues in PvE, so this enchant is in constant demand from these classes.

At level 70, Crusader gives +60 Strength and heals for 45-75 health.

Source
This enchant can be made through Classic enchanting. It is taught by Formula: Enchant Weapon - Crusader.