Really, I just don't think that Stealth Rocks are op enough to need this. We've already had the TM tossed and Magic Bounce is a great new tool against it. And while quad damage seems harsh to have, Volcorona makes me reconsider. Now, maybe if non-rock types took 25% damage setting up SR... But I still don't think we need that.
Only took 'till level 31. Ventanrex, official Korok member of the Knights of Safe Haven.