I find this card very strong. 2 ER for 1 thwart or attack and then a chump block. This is an auto include for most Avenger Leadership decks to me. Very strong with Captain America, Strength In Numbers, Band Together, and Earth's Mightiest Heroes. Stinger can also be played for free with Team-Building Exercise or Avengers Tower. Not counting against the ally limit means Cassie can be played at any time without risk too.

Rating: high A (S-D)

In my opinion, the best aspect card in the game. I don't like to call cards staples, but this fits in nearly any deck. And even if you have a perfectly fine 40 card deck and you play a scenario with a few 2 ATK non-guard Minions with a nasty when defeated effect or something like that coughthanos, tower defense,cough, you can just throw this card in and it will help a lot. Even if it just saves you a basic attack for 2, it's still practically 2 damage for 1 ER, and perfectly on curve. I also love it for Tigra to just collect the minions and keep them shut down. Hunted even ignores guard, so the weak, guard minions that are nearly in every scenario can be targeted. But it's situational and not an energy resource for the protection cards that want one. It can happen, that there is no target or just a 4 ATK minion, that you would still need to kill.

Possibly one of the worst identity-specific allies in the game, together with War Machine and Diamondback. Absurdly expensive, especially for a hero with a hand limit of 4 and a desperate need for resources to pay his powerful identity-specific events. Her Response is... okay, I guess, allowing Thor to make another basic attack, or to recover from Odin's Anger, but nothing I'm swooning over. In over a dozen games with Thor, I haven't been able to use her once.

My final verdict: Lady Sif, I want a divorce.

(either that, or I'm house-ruling her a cost of 3)

In a handful of scenarios there is more than one Villain. Carefully read these scenarios rules. In many cases (example The Wreaking Crew), there a clear statement: "Card that target the Villain, targets the Active Villain, not all Villains in play".

Virtually useless in solo (shame: if there wasn't a rule that prevents you from re-engaging a minion you've already engaged, it could have been an interesting strategy for Thor and/or decks running the recent Aggressive Stance), but I would almost always include it in an Aggression Thor deck when multiplayer (I guess it's no coincidence that Thor is in the picture...).

I hope they'll eventually change that re-engagement ruling. This card is the exact reason why it doesn't seem unbalanced to me to allow heroes to re-engage a minion they've already engaged, as it only fits niche - and frankly far from op - strategies (see above; I can also think of Lie in Wait and Patriot).