What are turn things into things wizard spells?

In various fantasy settings, "turn things into things" spells, often referred to as transmutation spells, allow wizards to alter the form or substance of objects or creatures. These spells can transform one material into another, change the shape of an object, or even transmute living beings into different forms. Common examples include turning stone into gold or transforming a frog into a prince. Such spells typically require a combination of skill, knowledge, and often rare components to cast successfully.