in general, it is probably a good idea to avoid putting "fire"/"flame"/etc in the name of a card outside of fire- unless it has a strong tie in to the element (costing fire quanta or directly benefitting fire cards as apposed to others etc)
the mechanic itself seems like an interesting way to chain a spell for an increased effect, hard to tell if its balanced or not, relative to fire bolt, which costs less and can do variable amounts of damage as well
