Firecracker works well only in bait and hog cycle: in these decks, firecrackers are able to survive and do enough damage on defense and work in counter push without much side effects. In other types of decks there are usually better choices, since her hp and dps is low to work as a solid air defense without fast cycles, the recoil causes her to frequently change targets on offense, and the range makes opponents easy to activate king tower.