Add the drained black beans to the saucepan. Sprinkle in cumin, paprika, salt, and pepper. Stir well to ensure the beans are evenly coated. Cook for 5-7 minutes, stirring occasionally until heated. Optionally, mash some beans with the spoon.
Add corn kernels to the saucepan with the beans. Stir to combine and cook for another 3-4 minutes until the corn is warm and well combined with the beans.
Warm the tortillas in a dry skillet over medium heat for about 30 seconds per side until pliable. This prevents them from cracking.
Assemble the tacos by placing a generous scoop of the black bean mixture on each tortilla, topping with avocado slices, cilantro, and a squeeze of lime juice. Add salsa or hot sauce to taste.
Notes
These tacos taste best when freshly made. Store any leftover filling in an airtight container in the fridge for up to 3 days.