Permanently enchant a melee weapon to often heal for 75 to 125 and increase Strength by 100 for 15 seconds. At level 70, Crusader heals for 45-75 health and gives +60 Strength.
is dropped by Scarlet Spellbinders around Hearthglen in the Western Plaguelands and Scarlet Archmages in the cathedral in Tyr's Hand in the Eastern Plaguelands, respectively, with a drop rate of approximately 0.5%. Prior to the Burning Crusade expansion this formula was heavily farmed. Crusader is now one of the best enchants for heirloom weapons as it can be applied to a level one item.
There are only up to 9 Spellbinders at any given time (3 on the ground floor of the tower, 3 on the top and up to 3 wandering around; respawn time is about 5-7 minutes).
Farming can also be slowed by the presence of a level 63 elite Scarlet High Clerist at the top of the tower who is pulled with at best two Spellbinders, at worst three Spellbinders and Cavalier Durgen.
A weapon enchanted with Crusader glows bright white. Crusader procs an average of 1ppm (procs per minute).
% to Proc = Weapon Speed * 1.667
At low levels (e.g. level 9) Crusader procs very rarely. Its not known at what level the standard proc rate takes effect.