Sign

The witchers prefer single-handed weaponry because it leaves their other hand free to cast Signs. Known signs are Aard, Igni, Yrden, Quen, Axii and Heliotrop.



Through the use of Circles of Elements, five of the signs become available over the course of the game:
 * Aard
 * Igni
 * Yrden
 * Quen
 * Axii



The Heliotrop sign was not included in the original game, but the FCR mod by the Ifrit Creative Group replaces the Axii sign with it.

Sign modifiers
Geralt's skill at using these signs is governed by the allocation of talents as he levels up. This allocation can affect the following:


 * Sign intensity — basically a multiplier for the severity of the sign cast.
 * Sign duration — used with signs like Quen and Yrden where the length of time a spell lasts is useful.
 * Whether or not a sign can be "powered up".

Cost of casting
The cost of casting a sign is typically measured in endurance. Casting signs uses up endurance and proficiency at casting those signs reduces the amount of endurance required to cast.