Buffalo Chicken Enchiladas

Name: Buffalo Chicken Enchiladas
Ingredients: 6 tablespoons unsalted butter; 3/4 cup hot sauce (such as Frank’s); 2 cups crushed fire-roasted tomatoes; 3 cups shredded rotisserie chicken; 1/2 cup sour cream; 12 ounces Monterey Jack cheese, shredded (about 3 cups); 1/2 teaspoon dried Mexican oregano; 1/4 teaspoon garlic powder; 1/4 teaspoon onion powder; Kosher salt; 12 corn tortillas; 1/4 cup Mexican crema; 1 tablespoon crumbled blue cheese; 1/4 red onion, finely chopped; 1 stalk celery, finely chopped; 1 ripe avocado, chopped; 2 tablespoons chopped fresh cilantro