This spell can be cast as either an action targeting an ongoing magical effect sustained by a creature or as a reaction to a creature casting a spell.
When you cast this spell, you and the caster of the targeted magical effect engage in a duel of pure magical prowess. This duel happens in the form of contested check, with you and your opponent each adding your spell attack modifiers to the roll. If the targeted magical effect is of a different level than this spell, then the caster with the higher spell level adds a number of d6 to their roll equal to the difference. If you win the duel, the magical effect or spell is dispelled, wasting the caster's spell slot. your opponent takes Xd10 psychic damage, with X being the level of this spell. If you lose the duel, you take the damage, with X being the level of the magical effect or spell you attempted to counter.
Comments