Scarf Rotom-H (Rotom-Heat) @ Choice Scarf  
Ability: Levitate  
Level: 50  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Overheat  
- Hidden Power [Ice]  
- Volt Switch  
- Trick  
Standard scarfer set

Def Berry Rotom (Rotom-Heat) @ Iapapa Berry  
Ability: Levitate  
Level: 50  
EVs: 244 HP / 100 Def / 4 SpA / 148 SpD / 12 Spe  
Bold Nature  
IVs: 0 Atk  
- Overheat  
- Hidden Power [Ice]  
- Volt Switch  
- Toxic / will-o-wisp / thunder wave
EVs for 2 rock tombs to activate berry from gross and living 2 fire blasts from zard y

Spdef Berry Rotom (Rotom-Heat) @ Iapapa Berry  
Ability: Levitate  
Level: 50  
EVs: 252 HP / 60 Def / 4 SpA / 180 SpD / 12 Spe  
Calm Nature  
IVs: 0 Atk  
- Overheat  
- Volt Switch  
- Toxic / will-o-wisp / thunder wave
- Hidden Power [Ice]  
Live two fire blasts from modest zard y, Lives two double edges from mega salamence

Standard Fir-Z (Rotom-Heat) @ Firium Z  
Ability: Levitate  
Level: 50  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Overheat  
- Hidden Power [Ice]  
- Volt Switch  
- Toxic / will-o-wisp / thunder wave
Standard fir-z, with the max spa, you can also go max speed max spa too

Bulkier Fir-Z (Rotom-Heat) @ Firium Z  
Ability: Levitate  
Level: 50  
EVs: 156 HP / 108 Def / 196 SpA / 36 SpD / 12 Spe  
Modest Nature  
IVs: 0 Atk  
- Overheat  
- Hidden Power [Ice]  
- Toxic / will-o-wisp / thunder wave
- Volt Switch  
Lives +2 Double edge from mega salamence in all but 1 roll and two flamethrowers from timid zard y