1. Combine first 5 ingredients in a small bowl. Stir in 2 teaspoons juice and 1/2 teaspoon garlic. Combine beans, remaining 2 teaspoons juice, remaining 1/2 teaspoon garlic, and cumin in another bowl.
2. Combine milk and eggs in a medium bowl; stir with a whisk. Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add green onions to pan; sauté 1 minute, stirring frequently. Stir in egg mixture; cook 3 minutes or until soft-scrambled, stirring constantly. Remove from heat.
3. Warm tortillas according to package directions. Spread 1 tablespoon bean mixture on each tortilla. Spoon about 2 tablespoons egg mixture down center of each tortilla. Top each serving with 1 tablespoon tomato mixture, 1 tablespoon cheese, and 1 teaspoon sour cream.
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