Swiss Chard and Chipotle Tacos

Name: Swiss Chard and Chipotle Tacos
Ingredients: 2 tbsp. olive oil; 1 onion, quartered and thinly sliced; 2 cups thinly sliced cremini mushrooms; 2 cloves garlic, finely chopped; 1 tbsp. soy sauce; 2 chipotle peppers in adobo sauce, seeds removed and finely chopped, plus 1 tsp. adobo sauce; 2 ears corn, kernels removed (or 1 1/4 cups thawed, frozen corn kernels); 1 bunch Swiss chard, stems removed, and leaves cut into 1/2-inch ribbons (about 3 cups); Kosher salt and freshly ground black pepper, to taste; Warm corn tortillas, chopped cilantro, sour cream, and lime wedges, for serving