Skarmory, Ferrothorn, Qwilfish, Foretress and Deoxys are the only spiker viable in Uber. Since I retired my team and dont intend to RMT it, here is the Deoxys I used for great record when the metagame was centralized on rain balanced team. He can still be used though, I hope it'll help some guys :
Deoxys-S @ Leftovers
Trait: Pressure
EVs: 252 HP / 148 Def / 16 SAtk / 92 SDef
Bold Nature (+Def, -Atk)
- Spikes
- Taunt
- Hidden Power [Fire] / Shadow Ball / Ice Beam
- Stealth Rock
Shadow Sneak Giratina-O Adamant full atk : 45.4% - 53.9%
Draco Meteor Giratina-O neutral full SpA : 84.2% - 99.7%
Fire Blast Dialga Support Modest 140 SpA : 48.4% - 57.2%
Draco Meteor Dialga Support Modest 140 SpA : 84.2% - 99.7%
Earthquake Groudon Support Impish 4 Atk : 42.8% - 50.7%
Draco Meteor Palkia Support Timid full SpA : 82.9% - 97.7%
I built this Deo since the rain team hate the entry hazards, so I combined it with some hard hitter. Also, this limite Arceus a lot thanks to his plate and Blaziken since they're trully a pain in the ass for us, offensive player.
He can take hit when needed and setup Spikes + SR almost all of the time. Most of team rely on Giratina-O Shadow Sneak, but its a troll 3hko with Leftovers; same goes for Draco Meteor who do 99% at max dmg. HP Fire for Forre, Ice Beam for Rayquaza since he can KO this Deo with DM, finally Shadow Ball for the other Deo-S.
As you can see there, unless the opponent have Darkrai, he'll play with SR + Spikes on his field, and if he doesnt use a powerful move like DM, he'll have 2 spikes. If he use it, its a free setup, and if not, then you'll just laugh when he'll switch and take +25%.