Countersong

As a reaction, you attempt to counteract the effects of a spell being cast through a musical instrument. Both casters make contesting performance checks. If the target's roll is lower, the spell automatically fails to cast, still using a slot and expending their turn. This spell can only attempt to dispel spells of an equal or lower level to it. If the caster wishes to attempt to countersong a 3rd level spell, they must also expend a level 3 spell slot.