An excellent card for your economy, assuming you have enough valid targets in your deck to use it every turn it is out -- which means you might never want 3 copies in your deck, unless you build the entire deck around this card. Also important reminder: the traits on your Alter-Ego do not matter for this, as you can only use it in Hero form.

Here is a list of how many cards in each heroes' core deck qualify for Team-Building Exercise (Listed from most to least), to assist with determining whether or not it is worthwhile to include (and how many you might want to include). (List last updated September 24, 2026)

15/15: Spider-Ham

13/15: Iceman

12/15: Falcon

11/15: Angel, Psylocke

10/15: Phoenix

9/15: Ant-Man, Hercules

8/15: Cable (with Technovirus Purge)

6/15: Thor

4/15: Bishop, Valkyrie

3/15: Black Panther (Shuri), Maria Hill, Wasp

2/15: Black Panther (T'Challa), Domino, Nick Fury, Winter Soldier

1/15: Adam Warlock, Black Widow, Captain Marvel, Colossus, Cyclops, Daredevil, Deadpool, Doctor Strange, Drax, Echo, Gambit, Gamora, Hawkeye, Hulk, Hulkling, Ironheart, Jessica Jones, Jubilee, Luke Cage, Magik, Ms. Marvel, Nebula, Nova, Quicksilver, Rogue, Scarlet Witch, Shadowcat, She-Hulk, Spectrum, Spider-Woman, Tigra, Vision, War Machine, Wolverine

0/15: Cable (without Technovirus Purge), Captain America, Ghost-Spider, Groot, Iron Man, Magneto, Nightcrawler, Rocket Raccoon, Silk, SP//dr, Spider-Man (Peter Parker), Spider-Man (Miles Morales), Star-Lord, Venom, Wonder Man, X-23

I will add later heroes as comments to this one, should an edit feature be unavailable at that time. If I missed anything, please feel free to correct me below.

At first glance the stats are pretty average, even a little underwhelming, but how you combo Misty makes her absolutely top tier. First off, because she comes in with a tough card you've either got 2 blocks and 1 damage/thwart or 1 block and 4 damage/thwart. Pretty nice. But pair her with two other cards from this wave - Righteous Purpose and Defensive Formation and she gets nuts. A 2 health ally that can effectively do 12 damage/thwart or a combination thereof (even more if you just keep cycling through toughs) OR 9 damage/thwart and still block for you when the toughs run out. She pairs great with Luke Cage because Fogwell's Gym let's you get multiple uses in a turn but I can see her being a strong staple in many Defenders based teams.

Luke Cage loves this scheme to pull Knuckle Sandwich. He can use Knuckle Sandwich 5+ times to finish up a game. Going from 3 damage per event to 4 is a big damage boost. Keep Up the Pressure's 2 threat perfectly matches Luke's THW in solo. The Justice version is Generation X but it takes 3 threat instead of 2 and doesn't give a damage boost.

In multiplayer (or solo with Adam Warlock or Spider-woman), you may attach this to Live) Dangerously so that essentially everybody gains +1 hand size for a total cost of 2ER. This seems really very strong.

Outside of heroes with the giant trait like Wasp, i read this card as 3 ER: deal 3 dmg to the villain or 6 dmg to a minion. As long as you keep your hp high enough (generally 7+), this is an efficient big minion killer card.