How do I use Adobe Firefly in Illustrator?

Adobe Firefly is not a tool or feature within Adobe Illustrator; hence, one cannot use Adobe Firefly in Illustrator. It's possible there may be a misunderstanding or confusion with other Adobe software or services. Adobe offers various creative tools, such as Photoshop, InDesign, and After Effects, each with its unique capabilities and functions. If you are looking to add effects, create graphics, or manipulate images in Illustrator, you would typically explore using the variety of tools available within the program itself, like the Pen Tool for vector paths, the Brush Tool for freehand drawing, or the Gradient Tool for color blending effects. For specific tasks or to enhance your workflow in Illustrator, you may consider exploring Adobe's official tutorials or forums for tips and best practices.