>>16659594After You acts like the original Helping Hand with a 1.5x power boost. Mirror Move/Transform/anything that lets you use a foe's move boosts the move's power by 1.2X. Terrain moves damage all Pokemon not of that type by 1/8th max HP per turn. Quash makes the target's move damage both the intended target if applicable, and also as if the target had hit ITSELF with the move. Embargo makes beneficial items reverse their positive effect (choice items reduce speed/atk./etc. by 50%, etc.). Torment/Nightmare deal 1/6 max HP damage in addition to their normal effect until the target is switched out or the user faints. Topsy Turvy also acts as the move Stored Power (still phys. or special depending on ability), but typeless, depending on the FOE's stat changes as well as having its normal effect.
now that SHOULD BE it. It took me a fucking almost-hour to make that up. I'll be really disappointed if no one responds.
Best part?
Smeargle is one of the 'mons that gets it.
