Nebula's Honed Cutthroat Razor

The idea of this deck is to leverage the power of Cutthroat Ambition and Honed Technique to do big chunks of overkill damage to the villain. For that reason it works best with plenty of minions in the encounter deck.

Card draw is provided by good ol' Avengers Mansion and Hall of Heroes, as well as Nebula's AE ability. Getting Nebula's Ship out early will help with the requirement of Honed Technique, but there are plenty of other resources in the deck if need be.

The star of the show here, besides Cutthroat Ambition (which you should be returning to your deck with Combat Ready at every opportunity) is Into the Fray. Hit a 2hp minion with that + Honed Technique + Cutthroat Ambition and you're wiping out the minion, removing 7 threat from the main scheme, and doing 7 damage to the villain with one card!