Swamp Shaman + Dark Prince's Royal Armor = Blackfrost
Blackfrost + Armor of the Wolf = Guardian's Battlegear
Spectral Captain + Armor of the Infernal Lord = Riverstone Mantle
Rocfeather + Armor of the Infernal Lord = Horrible Wurm Costume

A 4* that is given to top 500 guilds in Guild Wars, a 4* that I already have maxed, a 2* and a 4* that is the weaker version of the current EB.
Sounds like luck's not really on my side.