>>15685377With Aegislash/Gengar being everywhere I find Dark Pulse is a lot more useful than Grass Knot, of course you're going to get completely walled by Quagsire that way though.
Also, Parabolic only feels worth it in doubles. People mainly go for thunder as Heliolisk gets dry skin, so with rain you'll have the regen and the 100% thunder accuracy. Really depends if you want to go specs or not, they work great on Heliolisk because of it's amazing coverage, the other option is life orb because with dry skin you take no real damage from it in the rain.