>>44798079All eggs are 1*. What you want are the three passive abilities, and shinies always have all three. If you get a shiny, it's most likely the best eggmon for that species unless you wanted a striker/support/tech (the shinies will always be the exact same type of sync pair).
You raise the 1* eggs using the tickets you from egg events + exchanging egg vouchers in the shop. Unfortunately all the eggmons suck so there's no reason to use them.
Also, hatched my third shiny Charmander today. 3 squirtle, 3 charmander, and one bulbasaur total.