This sounds like the perfect thing to get me back into breeding, and Pokemon actually, since I haven't touched my games in a while now. Bonus points for making this work especially well with post-game saves, since you can play this and do other stuff on the side too; as a matter of fact, I'm planning to join the red paper clip challenge with my X save as well, haha.
My sign-up:
Username: MIAU
Starter Pokemon: Tyrogue
Goal: Breed
all 18 17
baby Pokemon!
Game: X
This means I'll have to do incense breeding every single time, and then evolve the babies through all sorts of methods, sounds fun and exciting. I'll be doing only 17 out of 18 because I'll have to skip either Jynx or Blissey, as both are female-only, which would break my chain. Tyrogue is male-only, which is why I'm starting with him in the first place, hehe. Fingers crossed I get male on the first try with each generation; I can see lots of duplicates with those 25% male Fairies though...
Oh and I found this
egg group crossover chart, it's very helpful having a visual guide like that for this challenge :)