Rotom-Frost @ Choice Scarf 
/ @ Icium Z
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Volt Switch
- Blizzard
- Trick / Pain Split
- Thunderbolt
Rotom-Frost is an incredibly threatening offensive pivot that forces a lot of switches because of its powerful STAB options. It does, however, have a huge flaw in that it is weak to Stealth Rock, which can be crippling if not dealt with, and another flaw in its weakness to Fire types.

Silvally-Water @ Water Memory
Ability: RKS System
EVs: 200 HP / 124 SpA / 184 Spe
Timid Nature
IVs: 0 Atk or 31 Atk
- Parting Shot / U-Turn
- Surf
- Flamethrower
- Defog
Almost any Silvally form is a great partner to Rotom-Frost, but the most common one is Silvally-Water. Silvally-Water threatens most, if not all, significant setters of Stealth Rock and resists Fire and threatens Ground and Rock types for Rotom-Frost. Rotom-Frost meanwhile resists Electric and threatens Grass types for Silvally. In addition to this, Silvally and Rotom-Frost form an excellent pivoting core, which allows the duo to hold momentum excellently.
---Teambuilding Weaknesses---
While this core may apply great pressure offensively, there are some defensive concerns. Neither of the two are immune to Volt Switch and both have significant weaknesses that the other does not resist. Both are also vulnerable to being worn down and neither is capable of switching into powerful attacks comfortably.