Divine Retribution
Conquistador de pan
One of my favorite combinations in this meta game, is a double battle team of Greninja and Agislash. I set up a mat block using Greninja's speed, changing its type using protean ability, then my Agislash uses substitute under safety of mat block, then use Greninja, holding a foucus sash, to survive get a move in, and have Agislash dominate switching from kings shield to an attack repeatedly trolling the opponent because they never catch me in my attack mode, because I am holding a full insence, so they all ways get my defensive form, with max evs in both defenses. Then just send in a mega kangaskan after Greninja to while the plate clean. Usually gets the job done.
The full incense thing is very interesting, I might play around with that later. Kudos to you for thinking of that. The one issue I've always had with Shadow Sneak is that if your opponent survives it they're going to hit your much frailer Sword form, whereas, when combined with Protect or King's Shield, this would prevent that. He'd appreciate Wish support though.
Unfortunately Kangaskhanite is banned in standard competitive play so this is only applicable on WiFi battles and VGC 2014.