Set Description
Quagsire switches into Swampert, Milotic, and Starmie to nullify the progress they aim to make with Water-type STAB moves. It is also strong against non-Ice Beam Suicune, making it a valuable counter to Sleep Talk variants. Against Roar Suicune with Spikes down, however, it will eventually be worn down if the player is not careful. Rest allows it to absorb Toxic from Swampert, Milotic, Rest Zapdos, Hidden Power Fire Magneton, and even defensive Jirachi sets, while Curse enables it to set up and threaten progress after Skarmory has been KOed. Earthquake offers a strong STAB attack and a means of pressuring the grounded backbone Pokemon Quagsire is tasked directly with countering, as well as their common partner in Blissey. Ice Beam allows it to wear down Zapdos, Celebi, Flygon, and Skarmory, which halt its momentum, and keep physical attacking Salamence sets at bay.
With its Water / Ground typing, Quagsire is able to comfortably tank physical attacks from Metagross, Tyranitar, Aerodactyl, and Salamence, just as Swampert does. However, without Protect and with worse stats, it struggles to pivot in on powerful, often Choice Band-boosted, attacks or KO any of them from comparable HP ranges. 40 Special Defense EVs allow Quagsire to tank Hidden Power Grass from maximum Special Attack Tyranitar, and more investment can be considered to better tank attacks like Ice Beam from Blissey and Swampert; however, as Quagsire is desired for bringing physical bulk, it is important to keep heavy investment in Defense.
Team Options
Quagsire is not a direct substitute for Swampert. It lacks a strong STAB attack that hits Skarmory, and it struggles to make progress against certain other important Pokemon in the tier due to lacking breaking power. As a result, Quagsire is best supported by Spikes and a means of stifling the opponent's Spikes, making Pokemon like Skarmory, Forretress, Magneton, Starmie, and Claydol good teammates. Claydol in particular is desirable for its support in checking many of the same physical attackers as Quagsire while offering more special bulk against the mixed attackers of the tier. Bulky attacking Tyranitar has strong synergy with Quagsire, as its sand helps Quagsire make progress against defensive Celebi, Zapdos, and Water-type Pokemon, while Quagsire all but nullifies its premier counter in Swampert. Physical Tyranitar also switches in on Celebi and Zapdos, while Pursuit Tyranitar can trap Gengar, which counters Quagsire. Blissey offers defensive utility against special and mixed attackers, brings cleric support with Wish or Aromatherapy, and can use Thunder Wave to slow down physical threats. In return, Quagsire is able to handle Sleep Talk Suicune for Tyranitar and Blissey. Metagross is similar to Tyranitar in its usefulness to Quagsire, as it is able to switch into Celebi, draw in bulky Water-type Pokemon, and trade with Zapdos and sometimes Celebi. One must also take care when playing against opposing mixed Metagross, since even Psychic threatens to 2HKO Quagsire lacking significant Special Defense investment.