spell · the Vaal gem version of Storm Call
Vaal Storm Call is a Vaal spell that sets a marker at a location. While the marker remains, lightning strikes random enemies near it, dealing damage to them. After a short duration, a large bolt of lightning strikes the marker, dealing damage around it. When this happens, it will also set off the lightning at any other markers from this skill.
Looks like a glorified herald of thunder.
Level requirement: 12.
Checked by hand against the game, one Style at a time.