>>15241759>Weakened JolteonPhysical Greninja must carry both Water Shuriken as priority against faster foes or scarfed mons. Waterfall for consistent damage output. Night Slash or U-Turn and Acrobatics.
I must say, if you have Protean Greninja you almost can do whatever the hell you want.
But if you're still stuck with Torrent, a Mixed Set with Waterfall, U-Turn, Dark Pulse and Ice Beam @ Life Orb maybe can be viable.