I'm sure a lot of us have already learned what /pray does in the latest update, but I thought I'd compile all of them in one thread and update it when necessary.
If you /pray when targeting yourself:
-it will remove weakness
-it will lower the cooldown of your 15 minute ability down to 3 minutes
-it will reduce the cooldown of Raise to 1 minute
If you /pray when targeting a friendly:
-it will remove their weakness
-(untested) might lower their 15 minute cooldown to 3 minutes
If you /pray when targeting an enemy:
-you will instantly die, no log message
Tell me if there is anything I've missed and I'll fix the post.