Makes sense now, I appreciate that. I have one with Adaptability already, just not with Aqua Jet. I'll try breeding them and see the result.
EDIT:
Finally got it, I haven't bred in so long, but I didn't know the Ability had to be on one of the parents. Always thought it was random. Got an all Egg move Crawdaunt now! If anybody wants to check out my set, it's been working pretty well in battle spot.
Crawdaunt @ Focus Sash
Ability: Adaptability
EVs: 252 Speed, 252 Atk, 4 HP
Nature: Adamant
Moveset:
Dragon Dance
Aqua Jet
Knock Off
Superpower
I usually set up 1 Dragon Dance first turn. Knowing that my opponent may either switch out, or take me to my sash. I never lead with it because it hasn't worked out well. But clean swapping it in on something that will for sure OHKO it helps. Once you get the Dragon Dance up, it isn't out sped by much. I've swept multiple times with Crawdaunt. Love this little bugger, hopefully some of you take the time to test it out!