Combine 2 tablespoons each melted butter and steak sauce with 1 minced garlic clove. Brush 4 ears of corn with 2 tablespoons plain melted butter; grill over medium-high heat, turning, until lightly charred, 8 to 10 minutes. Brush with the flavored butter; grill 1 more minute. Season with salt and pepper; sprinkle with chopped chives.