The Viskr may

negate a spell, Gift, or other actively-used supernatural power by Unweaving the effect.

System: Usable only on Level One or Two Gifts, Disciplines, Sphere effects, or other notably minor magi­ cal abilities (such as weak spirit Charms). The player spends one Gnosis point and rolls Dexterity + Occult (difficulty 6). One success negates the effect.