I think this can be very efficient in a Groot deck thanks to "We Are Groot": the tough status card prevent all the consequential damages so as long as the ally attacks only when it has the tough status your ally as simply +2 ATK.

It's especially interesting with Rocket Raccoon as when he attacks a minion, he now has an ATK of 6 and Overkill !

Of course you only have a single copy of "We Are Groot" in your deck so you can't use enraged Rocket raccoon on each minion unless you have several copies of First Aid

Wasp with Wasp's Helmet and Heroic Intuition is 4 damage. If I'm thwarting and use Rapid Growth, do I deal 4 damage or 6 ? If the damage is 6, I think it could be worth to play Brains over Brawn with Wasp.

What is being cancelled as "Boost" effect? Is it the boost ability text only, or both boost icons and ability text? Target Acquired clarifies it's only the boost ability is why I ask (thus I am leaning the latter, it's both).

I feel like this is an incredibly powerful card to play when you are first player in a multi-player game - assuming I'm reading this right you would basically beef up all the other players and their allies as well for the entire player phase for a possibly nutso round where you and your allies go twice and every other player does extra damage/thwart. Expensive and less useful in solo.

This card completes the 'basic action + succeed at something --> ready' cycle with Battle Fury and Desperate Defense. The thing about evaluating a card like this is that the ready has to be worth the least powerful of the two basic powers you used. For example, with a 3 THW 2 ATK hero, if you thwart, ready, then attack, you spent 2 resources to deal 2 damage...not a good deal. If you have at least 3 THW, situations where I like this include when there is a side scheme in play, so you can thwart twice; you flip to alter-ego and REC 3 or more; or, you've also gotten your ATK up to 3. Of course, we can push those hero stats even higher with Spider-Woman's hero ability, for example, or Quicksilver with Maximum Velocity, which is a big upside. It's also really nice that we can let this sit out as an upgrade until the perfect turn where it is worth it. I think the REC option makes this a passable floor for average heroes, and the ceiling is high with specific heroes. I will keep an eye on this for my Justice decks.