Summoning lightning is also a trick that Squallers can perform. However, they were not permitted to use this ability in the Darkling's Second Army due to the unpredictability of its nature, remarked upon by both Alina Starkov in the Shadow and Bone trilogy and Sturmhond in the Six of Crows duology.

What powers do the Grisha have?

There are three orders of Grisha: Corporalki, Etherealki, and Materialki. Corporalki are the Order of the Living and the Dead, who can manipulate the human body. Etherealki are summoners, who can manipulate natural elements. Materialki, also called Fabrikators, can manipulate materials like steel, glass, and chemicals.

What is the rarest Grisha?

Alina Starkov is a Sun Summoner, which is the rarest and most powerful Grisha to ever exist. Sun Summoners are able to summon and bend light, and it's the only power that is able to destroy shadow and fight back against The Shadow Fold. Alina can also summon heat from the sun.