So here's my team at the moment:
Xurkitree @ Salac Berry
Timid Nature
Ability: Beast Boost
EVs: 252 SpA / 4 Def / 252 Spe
Thunderbolt
Energy Ball
Dazzling Gleam
Tail Glow
Greninja @ Waterium Z
Timid Nature
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Water Shuriken
Hydro Pump
Ice Beam
Dark Pulse
Kartana @ Life Orb
Adamant Nature
Ability: Beast Boost
EVs: 252 Atk / 4 Def / 252 Spe
Leaf Blade
Smart Strike
Night Slash
Sacred Sword
I got to 19 wins before losing to Grimsley (
>>30709289 was my post, I said this earlier), and the way I see this, I'm either dropping Kartana or replacing its Life Orb with a Focus Sash, because if I get put in the same situation again, I want to have a chance. Xurkitree has been doing great with Tail Glow sweeping, and Greninja is a great revenge-killer, so if Kartana goes, another physical attacker is taking its place.