Max Atk/Spe EVs, あめ状態 the ability that doubles Speed, Swift Swim is a physical attacker build of Mega Swampert that leverages it.Rain Dance to double its Speed, and overwhelming from above with powerful Water moves boosted by rain and broad coverage — its composition.

Alternative Move Options

Waterfall is also recommended

Wave Crash slot, Waterfall is also recommended. It has no recoil damage and an added flinch effect, so customize it to suit your team.

Rain Dance Swift Swim Attacker Role

Using the stat boosts from Mega Evolution as a shield, Rain Dance is used to break down the opponent's board with high physical firepower as its main role. Broadening coverage with subweapons like Ice moves, forcing high-power moves from its boosted action speed to aim for a sweep — its role.

Recommended for rain teams

Mega Swampert is recommended as the ace of a rain team.the ability Drizzle, Mega Swampert can Rain Dance without giving the opponent an opening. Basculegion and Archaludon also pair well as attackers after Mega Swampert is knocked out. What is a rain team?

Threats

Weak to Grass types and Sunny Day conditions

Grass types are troublesome since they hit a 4x weakness. Also, にほんばれ状態 halves Water-move damage, and the ability Swift Swim does not activate.When facing a Grass type or when the weather is Sunny Day, don't force it to stay in; instead switch to a Pokémon in reserve.

Max HP/Def EVs, Leftovers to secure turns while building up the field — a physically defensive hazard-setter Swampert.Yawn to force the opponent to switch, Stealth Rock to stack up chip damage, setting up a favorable field to support its allies.

Alternative Move Options

Running Roar is also recommended

Protect instead, you can force the opponent to switch outRoar is also a recommended option.Substitute, giving you an edge against opponents who try to counter it.

Stealth Rock + Yawn Hazard Setter Build

Using its high physical bulk as a shield, Yawn and Protect to reliably put the opponent to sleep or force a switch — its role is a supporter. With a Nature that lowers Speed to move last, Flip Turn using deploying the next ace safely after tanking the opponent's attack — strong playstyle.

Threats

Weak to Grass-type Pokémon

Swampert has a 4x weakness to Grass, so it may be knocked out in one hit before it can set up hazards.Switch to a Pokémon that covers its weaknesses, such as a Fire- or Steel-type, to deal with it.

With Atk/Spe EVs, and the ability Swift Swim via An ace build that leverages its rising Speed to land physical moves from above Mega Swampert build. The Nature いじっぱり boosts its power, and あめ状態, it pressures opponents heavily with physical Water moves boosted by it.

Alternative Move Options

"Waterfall" and "Rock Slide" are also recommended

Waterfall or Rock Slide has a secondary effect that may cause flinching, so the ability Swift Swim pairs well with Mega Swampert, whose Speed rises through it. Also, adopting Rock Slide, にほんばれ状態 can deal heavy damage to Mega Charizard Y as well.

Doubles Physical Attacker Role

the weather to あめ状態 by lining it up with an ally that sets, the ace role of dominating the opponent's board with its high Attack. Adopting the powerful spread move in Double Battles, Earthquake, while also weaving in single-target moves that don't hit allies and Protect into the mix, it can play flexibly.

Threats

Weak to Grass Types and Harsh Sunlight

Grass types are troublesome because they hit a 4x weakness. Also, にほんばれ状態, Water-type moves deal half damage, and on top of that the ability Swift Swim does not activate. When facing Grass types or when the weather is Harsh Sunlight, Protect or switching, counterattack with a teammate's moves.