Hey Dude, interesting choice to use Kyurem-B in a stall, i used him under rain but.. i never seen a stall with him under sand weather. The team is pretty good and have not much troubles, but, like ever i have some advice to give you so, let s rate it!
First off, as i can see you re a bit weak to SheerLando+ Pursuitter (Such as BandTytar) core, wich is always more used from the moment his most famous check are Psychic Types. But Celebi has an advantage that below we will see; another problem is the lack of a good pseudo haze move, your only are Dragon Tail on Kyurem-B, but most common Booster sweepers have a good way to hit him, and more of time is HOKO (for example Bpunch of Scizor, or a common DDnite/DDSalamence) and sometimes misses too and other is Perish Song, that work after 3 turns, a real trouble.
So these are my suggestions:
- First of all, I d suggest you to give U-Turn/Baton Pass>Psychic ( I prefer the second because is more safe), Psychic just attracts common dark types pokemon. With Baton Pass you have a good move to escape without risks to Scizor/TyranitarBand, and give you free setupp with your steel (in this case Forretress) or with Hippo if you didn t do it yet, furthermore, in combo with Perish Song is a great way to recover momentum, from the moment it allows you to scout opponents pokemon sent out, fundamental to win especially in a stall team. With this simple change, you loosen the eventual pression of special move against Jirachi a time defeated your Celebi, that because Celebi more than SpecialWall is your only status absorber, and can enter on Rotom-W or Jellicent without fear of an eventual random burn (Suicune can t enter on Jellicent or Rotom-w because has not way to hit the first and the second has Volt-Switch)
- Well, now your problem is the lack of a good Phaze move, you could use Whirlwind>Ice Fang, the reason is pretty simple, Tornadus-T will be probabily banned, Ice Fang is not too useful against dragons and Landorus(-T) that you can check easily with Celebi/Forretress (you have not switch onto Dragonite for example, and Ice Fang against eventual leftovers set probabily lost 1vs1). But Youre not forced to change if you don t want, another option is replace Roar/Haze instead of Calm Mind on Suicune, you really don t need CM in your set, because you have only a move and could be easily checked by commons Water Absorb or Dry Skin Toxicroak, that have free setupp on him. Roar can help you to shuffle the opponent team on the entry hazards, from the moment you have not a Spin-Blocker and shuffling is a good way to do indirect damages (eventual on a switch in of the opponent spinner, for example Starmie or Tentacruel could be good switch onto him).
- Last thing i suggest you is to change Kyurem instead of Kyurem-B, the reason is simple, the Trait. With Kyurem you have more possibility to PP stall eventually Steels such as Bronzong or Ferrothorn thanks to SoobRoost + Pressure, moreover you should try a Special Set, for example the common Ice Beam + Earth Power, so you have something more against above steels or against Skarmory/Heatran that have a free way to setupp Entry Hazard and do a lot pressure on your Forretress (your mainly Wall against Physical Dragons). Anyway you only need of 52HP to don t break your substitute against Night Shade/Seismic Toss, so you have free 200Evs to move onto Atk/SAtk to do a bit more offensive.
Hope I helped you dude, good luck with your team
Kyurem @ Leftovers
EVs: 52 HP / 232 SAtk / 224 Spd
Modest Nature (+SAtk, -Atk)
- Earth Power
- Ice Beam