
Although expensive as mentioned by others, I see its value as "reach" card. Take Venoms weapons for example. His multigun and pistols do 2 damage in one activation at best. Their value derives slowly over turns, especially when setup early. I'm imagining situations where elite minion's (6/7+ health) show up or you've reduce the villain to <10 health but wont make it further than a turn or two.
Thats where Fusillade fits. Its a card that gives flexibility at the downside of being rather expensive. Its a card for quickly handling bigger threats.