Preheat oven to 350° Fahrenheit. Line baking sheet with silicone baking mat or parchment paper.
Melt butter in a small sauce pan. Whisk in Buffalo sauce, Ranch seasoning packet and Worcestershire sauce. Remove from heat.
In a large mixing bowl, mix together pretzels, oyster crackers and Chex corn cereal. Pour sauce from sauce pan on top and toss until all the of the snack mix is coated. Immediately place on baking sheet and bake for 10 minutes. Stir snack mix to turn it over and bake for 10-15 more minutes. Snack mix is ready when it is crisp.