I've been screwing around with Kartana in the Battle Tree. The set I'm running is:
Jolly nature, 252 Atk/ 252 Spd/ 4 Def, and I haven't found an item for it.
Leaf Blade, Smart Strike, X Scissor and Detect. X Scissor is good for checking Pokemon like Weavile and Scrafty. Resistances don't...