Putting devilcore on a rare with over 48 hours respawn might not be the best idea if the intention is that players can enter MC on Thursday with the set.
Currently the mob is being camped by guilds who have no intention of crafting the set for others. World first yada yada.
I believe it only drops one of the 2 recipes as well, so there is a very real chance some servers wont even have both recipes, let alone on both factions