Ziggurat's version of a flamethrower, shoots green flames that have short range and low damage. It fires quickly, and has low mana usage, but the range is bad and so is the damage. The secondary fire shoots green orbs that arc and poison enemies at a fast fire rate and a higher mana cost than the primary.
Dragon Bile has very good mana efficiency with its primary attack, as even a single point of mana creates a puff of poison that can affect multiple enemies at once. While its direct damage is small, its great damage over time makes it capable of kiting even swarms of very tough enemies, at close range.