The Phoenix Armour Set is an unofficial set - that is to say, a collection of items which obviously should be put together but grant nothing other then bragging rights should you accomplish it. This segment is a (badly named!) Norse Helm. Parts were only obtainable as a reward option from the 1999 Clean Up Britannia event. There are six pieces to the set, each piece cost 100,000 points, and they were randomly selected when requested as a reward - Hence getting a complete set together was very difficult. The armor pieces have never spawned as loot on Phoenixes.