Really looking forward to these games, most excited I've been for a mainline Pokemon game for a while. Some theorycrafting with the Terastal mechanic.
Porgyon-Z @ Magnet
Ability: Adaptability
EVs: 252 SpA / 4 SpD / 252 Spe
Tera type: Electric
Timid Nature
- Nasty Plot
- Thunderbolt
- Ice Beam
- Agility / Recover / Tri Attack
Yay Bolt Beam! Swapping out bland Normal typing for cool Electric helps it break through stuff it couldn't before, like bulky Heatran. Ice Beam hits the Grass and Dragon types that resist Thunderbolt. Last slot can be whatever you want - Agility lets you blitz offensive teams, Recover keeps you healthy, Tri Attack lets you break through stuff like Gastrodon.
Magnezone @ Choice Scarf / Choice Specs
Ability: Magnet Pull
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
Tera type: Fire
- Tera Blast Fire
- Thunderbolt
- Volt Switch
- Flash Cannon
Even if Tera Blast only has 60 BP, it's still enough to KO everything it needs to now it gets STAB. Standard Magnezone, now better than ever. You could run Ground if you want to trap and kill Heatran, though you can't trap Ferrothorn anymore.
Salamence @ Life Orb
Ability: Moxie
EVs: 252 Atk / 4 SpA / 252 Spe
Jolly nature / Navie Nature
Tera type: Ground
- Dragon Dance
- Earthquake
- Rock Slide
- Roost / Fire Blast
Instead of being stuck with either weak STABs or a locking one, you now get a 100 BP drawback free one. Standard DD Mence otherwise. You could run Dragon Claw if you want to hit stuff like Latios or Rotom-W.