Vegan Cilantro-Lime, Sweet Potato, and Black Bean Tacos
1 bunch fresh cilantro, finely chopped, divid… 1 teaspoon chili powder 1 teaspoon paprika 1 ¼ teaspoons cayenne pepper, divided 12 (6 inch) white corn tortillas 2 (16 ounce) cans black beans, drained and ri… 2 sweet potatoes, quartered lengthwise 3 ¼ tablespoons olive oil, divided 6 ounces vegan sour cream salt and ground black pepper to taste ¼ teaspoon ground black pepper ½ cup pumpkin seeds ½ tablespoon ground cumin, or to taste ½ teaspoon salt ¾ lime, juiced, divided ¾ teaspoon smoked paprika, divided