Magnezone @ Custap Berry
Trait: Magnet Pull
EVs: 252 SAtk / 252 Spd / 4 HP or 172 SpD / 252 SpA / 84 Spe
Modest Nature (+SpA, -Atk)
- Substitute
- Charge Beam
- Flash Cannon
- Hidden Power Fire/Hidden Power Ground
The basic idea is that you prey on Fortresses/Ferrothorns without activating the berry and with a sub on, and charge beam them to death, sub on the next thing that tries to attack you until you get to Custap territory, move first next turn and KO them, and then with a sub on proceed to murder the third switch in. Seeing how that may seem optimistic, you can always use the berry at the very least guarantee the 2HKO on the second mon.
(Calcs to show its strength, not necessarily what the opponent would be sending:)
+2 252+ SpA Magneton HP Ground vs. 252 HP / 236+ SpD Jirachi: 235-277 (57.42 - 67.82%) -- guaranteed 2HKO (Rain)
+2 252+ SpA Magneton Flash Cannon vs. 252 HP / 4 SpD Hippowdon: 354-417 (84.28 - 99.28%) -- 37.5% chance to OHKO after Stealth Rock
+2 252+ SpA Magneton Flash Cannon vs. 252 HP / 0 SpD Latias: 216-255 (59.34 - 70.05%) -- guaranteed 2HKO
+2 252+ SpA Magneton Flash Cannon vs. 252 HP / 252+ SpD Tyranitar: 390-462 (96.53 - 114.35%) -- 81.25% chance to OHKO
+2 252+ SpA Magneton Flash Cannon vs. 252 HP / 228+ SpD Amoonguss: 229-271 (53 - 62.73%) -- guaranteed 2HKO after Stealth Rock
+2 252+ SpA Magneton Flash Cannon vs. 252 HP / 236+ SpD Celebi: 198-234 (49 - 57.92%) -- guaranteed 2HKO after Stealth Rock