Ohhh my goodness! What a treat for my 5000th post!
I was Masuda Method breeding Pumpkaboo while watching Kyoukai no Kanata. I had about 20 babies with different spreads, so I figured I should breed one perfect one. I saved and started doing the
Egg trick. I deposited the two English Gyarados into the Daycare and hatched...
A SHINY MAGIKARP, NOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!
I... I HAVE NEVER HATCHED A SHINY WITHOUT RNG BEFORE OMG. I WAS LEGITIMATELY SHAKING DESPITE THE FACT THAT EVERYONE AND THEIR MOTHER CAN GET A SHINY KARP/GYARADOS FROM HGSS OR FROM FISH CHAINING.
So... I didn't want Magikarp. I took my odds and restarted the game; the PID2 that dictates shinyness should be static on the upcoming egg frame. I deposited two English Pumpkaboo into the Daycare and then got... MY LOVELY GODDESS