EQ: Not actually a spell but AA, Divine Arbitration. Equally divide hp of everyone in group. (tank at 5% rest at 100%? click it, everyone is at 70%)
EQ2 Coercer: Same as before, but epic proc where you equalize mana in the group. (Can't remember the name)
EQ: Warrior AE Taunt
EQ: Area Res
EQ: Invis to Undead
EQ: Summon corpse
EQ: Spirit of the Cheetah - yes i know, just like SoW just a little faster and like invis gone when hit)
And not really a spell, but Disiplines!
I hate to die - well to be a little more precise I hate it when my character dies even if the game itself has no penalty. And Pantheon *will* have a penalty.
After 20 years of playing these games I have many favorite abilities but with this in mind I would put the top two as feign death and evac. Which many games have under many names in many forms.