Hmm, well the point is you have to be at such a huge disadvantage you can't make up for it.
How about:
"if your opponent would kill you next turn, and you wouldn't kill them, all your creatures get momentum
If you opponent would kill you next turn, and your opponent has over 80 life, all your creatures gain momentum and quintessence
If your opponent would kill you next turn, and they have full health, all your creatures get momentum, quintessence, and adrenaline"