Of course this works decent with Black Widow Aggression, but it is riskier with her having low health. I would only recommend you put this in Black Widow Aggression decks if you also have Endurance down to give her more health buffer. If you have Down Time as well that will allow you to recover and flip back quicker. Counterattack is a really good card to have in a high HP hero Aggression deck like Hulk or Thor or She-Hulk. Remember that it's not forced, so you can save for when the villain really brings the heat to dish it right back at them on their turn. It's cheap too, so it works better for Thor and Hulk to get down as well.
Preparation. Tactic.
Max 1 per player.
Hero Response (attack): After you take damage from an enemy attack, discard Counterattack → deal an equal amount of damage to that enemy.
Revisiting this card now that the new Conditioning Cards are out. Each Conditioning variant adds plus 1 to its respective stat and grants 3 HP. This will help players extend the “HP as a resource” play style, especially in multiplayer where players can play the different variations on each other for even bigger health pools. Everything from the previous review still applies but I think it’s worth highlighting that this card works particularly well for high recovery heroes: Hulk, Deadpool, Wolverine, She Hulk, Venom, etc… really any hero with a recovery of 4 or higher. In terms of cost and ease of use this card probably has the highest Damage per Resource potential in the game so far.