Now that it is live, what's the best set? I'm thinking:

Cap Pikachu @ Pikashunium Z (this item is the only reason to use Cap Pikachu)
Hardy
Static
4 HP, 252 SpA, 252 Spe
- Thunderbolt
- HP Ice
- Grass Knot
- Double Team / Substitute
Z-Move: 10,000,000 Volts Thunderbolt (195 BP)

35
55
40
50
50
90