Regeneration 2 (Deactivated by Acid or Fire)

Trigger The spark troll would take sonic damage
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Effect The spark troll redirects hazardous sonic vibrations to another target within 30 feet. The spark troll gains resistance 5 against the triggering damage, and their chosen target must succeed at a DC 16 Reflex save or be knocked <a href="/condition/prone">Prone</a>.

Sonic Redirection

The spark troll calls lightning down from the sky, then redirects it out from their hands in a 40-foot line. Creatures in the line take 1d4 electricity damage (DC 16 Basic Reflex save).

Lightning Blast

Spark Troll (1-2) - chaotic, elemental, evil, fiend, troll, unholy

@Localize[PF2E.NPC.Abilities.Glossary.Regeneration]

Trigger The spark troll would take sonic damage
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Effect The spark troll redirects hazardous sonic vibrations to another target within 30 feet. The spark troll gains resistance 5 against the triggering damage, and their chosen target must succeed at a @Check[reflex|dc:16] save or be knocked @UUID[Compendium.pf2e.conditionitems.Item.Prone].

The spark troll calls lightning down from the sky, then redirects it out from their hands in a @Template[line|distance:40]. Creatures in the line take @Damage[1d4[electricity]|options:area-damage] damage (@Check[reflex|dc:16|basic|options:area-effect] save).