Support Spell
From NsdWiki
Support Spells cause an effect. These may be beneficial (give you or your allies bonuses), detrimental (give an opponent penalties), or utilitarian (cause an effect that entails no roll adjustments). Unlike Attack Spells, these do not require the mage to aim the spell like a weapon. The mage simply chooses a target and the target must resist the effects of the spell. This is similar to how opposed skills work (for instance, Seduce vs. Virtue).
To cast a Support Spell that causes detrimental effects (or even one that causes bonuses but the intended recipient doesn't want the effects), the mage must make a Casting Roll.