An archetype-specific card, but a solid synergy piece/build-around in that archetype. Are you running a critical mass of Into the Fray, Relentless Assault, Moment of Triumph, and Hand Cannon? Possibly on a hero with built-in cards with overkill (Rocket's Particle Cannon, Thor's Hammer Throw), or which already synergize with some of those (Ms. Marvel's Embiggen)? Include Follow Through and go to town.
Example Thor deck: marvelcdb.com