Why Extrasensory over Dark Pluse? DP gives you a physic immunity. My Evs are 252Spa 252Spe 4def at the moment with
- Ice Beam
- Surf
- U-turn
-Dark Pluse
I went for a Fast and hard hitting build with mine.
Timid, speed and special attack EV's with the rest in HP.
Ice Beam - Good Coverage
Scald - Reliable power, 30% burn chance can help but don't rely on it.
Grass Knot - Coverage
Dark pulse - Coverage + as you mentioned immunity to psychic moves
Slapped a Life Orb on it to maximize its damage potential and let it loose!
Really is a shame its so frail or it could get a lot more out of its type swapping as even not very effective hits tend to hurt.
Why Extrasensory over Dark Pluse? DP gives you a physic immunity. My Evs are 252Spa 252Spe 4def at the moment with
- Ice Beam
- Surf
- U-turn
-Dark Pluse
It's not supposed to take any hits, so ignoring all defensive benefits to dark pulse, the better coverage is offered by extrasensory hitting things like keldeo, mega venusaur, tentacruel, etc for super effective damage. Dark Pulse only really hits aegislash who can generally live one hit and hammer you with a sacred sword. It's up to what you need really for your team, but I prefer extrasensory. What psychic type wants to come in on a greninja anyway. I still have moves to hit all relevant psychic types hard.
How about
-U-turn(psychic, dark, grass)
-Extrasensory( poison, fighting)
-Ice Beam ( grass, dragon, flying, rock, ground)
-surf( fire, rock, ground)
252Spa, 252 Spe, and 4Hp with life orb modest for more damage. Protean