Whip eggs and milk in a mixing bowl and set aside. 
Place butter in a nonstick pan on medium heat. Add leeks and oyster mushrooms and sauté until wilted (about 5 minutes). Add crab and eggs and scramble together, being careful not to break up the lumps. 
Salt and pepper to taste and garnish with green onions. 
Serve with toast along side.

Chef note: feel free to be creative and add some of your favorite ingredients like cheese, or anything else you like to eat with your eggs.