Tranquility is imo one of the best and most thematic sub classes I have seen for the monk.
1) The sanctuary ability means that you will start every fight with protection. Surprise actions or attack will always have a chance to just fail on you because of this. And by gum it costs no ki!
2) Healing Hands is incredible (And probably broken). Yes the amount of healing is already amazing, but even that is not what really makes it. The fact that you can swap out an attack to use this ability.... means that you can heal yourself up to x10 your level in hitpoints any time you need to. That is incredible durability, no other monk gets even close to that.
3) The 6th level ability is just okay, nothing really special (although getting persuasion can be good if you don't already have it).
4) The 11th level is a great opener to effectively shut down enemies, though its definately situational.
5) The 17th ability is damn cool. For 1 round, I'm pretty sure you do more damage than other other melee class in the game (+17!). Anytime a party member goes down, and this monk goes "Super Saiyan", will be a moment that party will never forget.
