Source: Balancing the Scales, pg(s). 18
Spark trolls are tiny creatures with horns and long barbed tongues.
Spark trolls can understand the Abyssal and Jotun languages, and have a limited capacity for flight. Like all trolls, spark trolls have regenerative capabilities, though it can be suppressed by harming them with acid or fire. They are also immune to being electrocuted.
When harmed by sonic energies, spark trolls can redirect the force to bowl over nearby foes. A spark troll can also call lightning down from the sky onto themselves before redirecting it outwards in a line.