Prepare the Guacamole: Scoop out the flesh of the avocado and mash it in a bowl with a fork. Add chopped cilantro, lime juice, garlic powder, salt, and pepper. Mix well until all ingredients are combined and the guacamole reaches your desired consistency. Refrigerate until ready to serve.

Cook the Beef and Black Beans: Heat oil in a skillet over medium heat. Add the ground beef, cumin, smoked paprika, chili powder, salt, and pepper to the skillet, breaking it apart with a spatula, and cook until nicely browned, about 5-6 minutes. Add the black beans and cook for another 2-3 minutes, stirring occasionally until heated through.

Warm the Tortillas: While the beef mixture finishes cooking, warm the tortillas in a dry skillet over medium heat for 30 seconds per side or wrap them in a damp paper towel and microwave for 20-30 seconds.

Serve: Serve the beef and black bean tacos with chips and guacamole and limeade.