Most people know who Athene is, and how he has the record from 1-70 in 1 day and a few hours.
Most people dont know how he does it, He simple has this :
Scarab Brooch
Its a trinket that upon use, your heals will grant the target a shield that absorbs 15% of healing done for 30 seconds, the shield lasts 8 seconds or untill used.
Athene is in full T6, so his holy lights prob hit around 10k, 15% of 10k is 1.5k shield, so what he does is aggros the whole instance, runs to the entrance, heals his party member with the trinket activated, lays a concencrate and runs outside the instance, this way the person will always live and get full xp for the mobs.
Also for arena , this would be very helpful as any healing class.
Drops from AQ level 60 btw.
Just thought I would share ^_^