I think this talent worked perfect once they buffed it to 3 sec, They probably needed to add the 40 sec cap on it just to stop people from cheesing it but otherwise it was a solid talent. If you don't move you wont need to replace your Healing rain and can spend time casting other spells. Now its just weird and I doubt anyone would take it. Maybe its time for blizzard to rework this talent for the erm...4th time?