[Cynder]

Oh well. It would have looked cool, but I agree with you on the difficulty of the stunt.

Let's start with boosting something else this round: speed. Use Agility, to climb the stairs, if you can. If you can't do both in the same action, climb the stairs to the third floor, if you could use both, Agility to climb the stairs to the fourth floor. Really, whatever you do on the first action, keep going up on the second. Finally, if you are on the third floor on your last action, climb the stairs to the fourth floor; if you are on the fourth floor use Nasty Plot once more.

Agility (up stairs, if possible) ~ Agility (up stairs, if possible) / climb stairs ~ Nasty Plot / climb stairs