I’d like to discuss a water-ground type that I feel is being overlooked at the moment: Gastrodon.
Gastrodon-East @ Leftovers
Ability: Storm Drain
EVs: 252 HP / 8 Atk / 32 SpA / 216 SpD
Sassy Nature
IVs: 0 Spe
- Scald
- Earthquake
- Toxic
- Recover
Gastrodon’s main niche over Swampert is its access to reliable recovery, which allows it to switch in repeatedly to special wallbreakers such as Nidoking, Magearna and Spectrier, whereas Swampert tends to get worn down over the course of a match. Storm Drain is also a much better ability than Torrent, improving Gastrodon’s matchup against rain by giving it a valuable water immunity.
The set above is the one I believe to be most effective. Scald provides a deterrent to physical attackers such as Rillaboom and Garchomp with the 30% burn chance, Earthquake provides ground STAB and allows Gastrodon to beat certain mons like Glowking and T-Tar. Toxic and Recover are obvious. Min speed means that Gastrodon doesn’t have to lower its defense or attacking stats to have a spdef boosting nature and lets it outspeed Magearna and Alolan Marowak under Trick Room. The 32 evs in special attack let Gastrodon break a few key Subs with Scald.
Gastrodon fills a slightly different role to Swampert, and is mainly designed to be a consistent switch-in to Nidoking, Glowking, Koko, Magearna and Offensive Zapdos. Given Magearna is due to rise to the top of the metagame with Urshifu likely to be banned soon, it‘s worth noting that Gastrodon checks pretty much all Magearna sets except Iron Defense CM and Modest Specs Fleur Cannon.
Relavent calcs:
252 SpA Life Orb Sheer Force Nidoking Earth Power vs. 252 HP / 216+ SpD Gastrodon: 157-187 (36.8 - 43.8%) -- 99.8% chance to 3HKO after Leftovers recovery
36 SpA Gastrodon Scald vs. 0 HP / 4 SpD Nidoking: 212-252 (69.9 - 83.1%) -- guaranteed 2HKO
252 SpA Choice Specs Spectrier Shadow Ball vs. 252 HP / 216+ SpD Gastrodon: 180-213 (42.2 - 50%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Life Orb Tapu Koko Dazzling Gleam vs. 252 HP / 216+ SpD Gastrodon: 117-138 (27.4 - 32.3%) -- 61.7% chance to 4HKO after Leftovers recovery
252 SpA Slowking-Galar Psychic vs. 252 HP / 216+ SpD Gastrodon: 111-132 (26 - 30.9%) -- 7% chance to 4HKO after Leftovers recovery
8 Atk Gastrodon Earthquake vs. 0 HP / 0 Def Slowking-Galar: 224-266 (67.6 - 80.3%) -- guaranteed 2HKO
252+ SpA Zapdos Hurricane vs. 252 HP / 216+ SpD Gastrodon: 162-192 (38 - 45%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Tapu Lele Psychic vs. 252 HP / 216+ SpD Gastrodon in Psychic Terrain: 162-192 (38 - 45%) -- guaranteed 3HKO after Leftovers recovery
Gastrodon-East @ Leftovers
Ability: Storm Drain
EVs: 252 HP / 8 Atk / 32 SpA / 216 SpD
Sassy Nature
IVs: 0 Spe
- Scald
- Earthquake
- Toxic
- Recover
Gastrodon’s main niche over Swampert is its access to reliable recovery, which allows it to switch in repeatedly to special wallbreakers such as Nidoking, Magearna and Spectrier, whereas Swampert tends to get worn down over the course of a match. Storm Drain is also a much better ability than Torrent, improving Gastrodon’s matchup against rain by giving it a valuable water immunity.
The set above is the one I believe to be most effective. Scald provides a deterrent to physical attackers such as Rillaboom and Garchomp with the 30% burn chance, Earthquake provides ground STAB and allows Gastrodon to beat certain mons like Glowking and T-Tar. Toxic and Recover are obvious. Min speed means that Gastrodon doesn’t have to lower its defense or attacking stats to have a spdef boosting nature and lets it outspeed Magearna and Alolan Marowak under Trick Room. The 32 evs in special attack let Gastrodon break a few key Subs with Scald.
Gastrodon fills a slightly different role to Swampert, and is mainly designed to be a consistent switch-in to Nidoking, Glowking, Koko, Magearna and Offensive Zapdos. Given Magearna is due to rise to the top of the metagame with Urshifu likely to be banned soon, it‘s worth noting that Gastrodon checks pretty much all Magearna sets except Iron Defense CM and Modest Specs Fleur Cannon.
Relavent calcs:
252 SpA Life Orb Sheer Force Nidoking Earth Power vs. 252 HP / 216+ SpD Gastrodon: 157-187 (36.8 - 43.8%) -- 99.8% chance to 3HKO after Leftovers recovery
36 SpA Gastrodon Scald vs. 0 HP / 4 SpD Nidoking: 212-252 (69.9 - 83.1%) -- guaranteed 2HKO
252 SpA Choice Specs Spectrier Shadow Ball vs. 252 HP / 216+ SpD Gastrodon: 180-213 (42.2 - 50%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Life Orb Tapu Koko Dazzling Gleam vs. 252 HP / 216+ SpD Gastrodon: 117-138 (27.4 - 32.3%) -- 61.7% chance to 4HKO after Leftovers recovery
252 SpA Slowking-Galar Psychic vs. 252 HP / 216+ SpD Gastrodon: 111-132 (26 - 30.9%) -- 7% chance to 4HKO after Leftovers recovery
8 Atk Gastrodon Earthquake vs. 0 HP / 0 Def Slowking-Galar: 224-266 (67.6 - 80.3%) -- guaranteed 2HKO
252+ SpA Zapdos Hurricane vs. 252 HP / 216+ SpD Gastrodon: 162-192 (38 - 45%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Tapu Lele Psychic vs. 252 HP / 216+ SpD Gastrodon in Psychic Terrain: 162-192 (38 - 45%) -- guaranteed 3HKO after Leftovers recovery