Counterspells are a type of magic used in various fantasy settings, particularly in tabletop role-playing games like Dungeons & Dragons. They allow a caster to negate or cancel the effects of another spell before it takes effect. This can be crucial in battles, as it can prevent powerful spells from harming allies or altering the course of a conflict. In many games, counterspells require specific resources, such as mana or spell slots, and often have their own casting time. Players must strategically decide when to use them, as timing can significantly impact the outcome of encounters and the overall success of their party.