@Green, in 10 mans, whenever I use tranquility, I scream out over the mic: "I AM A GOLDEN GOD!".
It's such an amazing spell, and I only wish it was a 5min CD versus 8min

. Also, it heals quite more than half their HP usually. I'd say it's currently doing about 70% when used properly (in Treeform, right after a WG).