In skillet or directly over low gas flame, warm tortillas and keep covered to stay soft.
In nonstick skillet, heat oil over medium. Add eggs and scramble gently until just set, about 3 to 4 minutes. Remove from heat immediately so they don’t overcook; they’ll continue to firm up off the heat.
For crema, in small bowl, blend avocado, lime juice, yogurt, and salt until smooth and creamy.
Assemble tacos by filling tortillas with scrambled eggs, topping with kimchi and green onion and finishing with a drizzle of avocado crema.