Marvel Duel-Intelligence deck with agile hero trait
8My Black Widow hit 20 recently and got the new "agile" hero trait. With this trait, any time one of your cards attacks a card with 5 or lower power, it acts again. When you combine it with the silver sword that restores some power after a kill, you get a lot of attacks in a row. It's a great combo for somebody with high power, critical hit or other on kill passives like Gamora. If you were to combine it with a Hydra deck pumping cheap minions to the other side, it's a really fun combo. Intelligence cards and the hydra bombardment keep the enemies weak enough to be eaten alive.
Intelligence decks can be a little slow to start but if you work at pumping out lots of intel on your enemies with some protection like the scarlet shield or health restoration, you can have a fun end game.