by a1bert
Agree on the group how you'll play them, including Wings. We play so that you activate it at the beginning of another player's turn.Also, Rapid Healing can not save you if you're already dead.
Some groups may use relaxed timing, i.e. allow to use the cards before the final re-roll. But allowing to see the result before activation is just stupid in my opinion, as there is no risk, and some cards become even more powerful than they are already.