In the 'Witcher' series, what is the primary magical element harnessed by the Igni sign, and how does its manifestation differ between Geralt's books and video games? (Genius)
#1: Igni harnesses fire; in the books it is described as a burst of flames, while in the games it often appears as a spreading cone of fire.
#2: Igni harnesses water; in the books it manifests as a water jet, whereas in the games it works like an ice blast.
#3: Igni harnesses earth; in the books it causes tremors, but in the games it throws rocks.
#4: Igni harnesses electricity; in the books it is a lightning strike, while in the games it is a shockwave.