A "Spellcaster" is a character or entity in fantasy literature, games, and folklore that has the ability to cast spells. These spells can produce various magical effects, such as healing, summoning creatures, or causing damage. Spellcasters often belong to specific classes or types, such as wizards, sorcerers, or witches, each with unique abilities and methods of spellcasting. In many role-playing games, like Dungeons & Dragons, spellcasters use a resource called "spell slots" to determine how many spells they can cast in a given time. They may also require components, such as magical items or rituals, to perform their magic effectively. Spellcasters play a crucial role in many stories, often serving as powerful allies or formidable foes.