I know there was also one other set that did the same.. Eternal Yokeda? I forgot it's name but it was from a trial. As of now, Phoenix grants a large shield and a heal.
However, I preferred the old version where in death is resurrects you (yet there was a bug that it would not go off when it was available..) I liked using the old version of the phoenix because in
PVP, there is always those that hide and one hit kill from stealth, but Phoenix would always surprise them and they'd just end up dying after I revived and used detect potion...
I would even get kills with it in the past which was rare, but was pretty funny to see "You have killed _______ using Phoenix" pop in my chat box from an addon.