How about some more love for DnD Next!
Second Wind
Feat
You have learned how to take a few seconds to refocus yourself in the midst of battle
Benefit-Once per combat, you may spend your whole turn doing nothing. You do not grant advantage during this turn. You may spend up to one quarter of your hit dice (minimum 1) as you would out of combat. After combat you must take a short rest to regain the use of this feat.
Thoughts?