Well hot damn; three things I was gonna do anyway rolled into one card. With no boosts to combat it'll take some work to pull off sometimes, but against the chaff of most scenarios this is just what you want. Besides, you can still chuck Overpower for it or Vicious Blow in a pinch, but that's a heftier expenditure.
I'm not sure it replaces Emergency Cache however. The primary usage of emergency cache is as your first action, then actions two and three complete your setup. On the other hand, emergency cache is pretty worthless drawn late in the scenario (in my experience), while this is still fantastic. Finally, the resources it grants aren't conditional on the attack; you get them even if you miss. Hell, you get them even before you attempt it, so if you have Physical Training or Keen Eye you can spend them immediately for benefit.
Neat little card.