Foreman Marcrid is a level 58 rare mob human member of the Scarlet Crusade stationed in the Western Plaguelands. He appears in the camp to the west of the Northridge Lumber Camp[47, 33]. While not all that difficult to kill he does have some abilities. He has a standard cleave ability, and it also seems he has a higher chance to parry than other enemies around his level. He calls for help around his 40% health mark, so be ready for a bigger fight.
The most important thing about Marcrid is that he drops the plans for Frostguard, a sword created only by blacksmiths.