After a short period offline, the May Trading Post is once again available for European players, appearing to have removed Medivh’s Guardian of Tirisfal transmog set and restoring the originally advertised offerings.
Tiercel’s Wing is still a warglaive however, not a sword.
Unfortunately, this means that the fantastic Guardian of Tirisfal transmog set is no longer available, but the good news is that we know it will be coming at some point and now have models ahead of time!