Pokémon Quest: Cloyster, Seadra, and Onix Mewtwo Team Build

To defeat Mewtwo in Pokémon Quest without high-end Power Stones or optimized bingo bonuses, run a balanced team consisting of Cloyster, Seadra, and Onix. This composition relies on stacked defensive buffs to survive Mewtwo's burst attacks while delivering heavy ranged damage from outside melee danger zones.

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Cloyster Build: Iron Defense Support

Cloyster provides team survivability by sharing its defensive stat increases with fragile attackers. Mewtwo deals heavy area-of-effect damage with moves like Psychic and Psycho Cut, which can instantly wipe unbuffed glass-cannon teams.

• Move Selection: Run a single-move Cloyster with Iron Defense. A Pokémon with two moves splits its Move Stone sockets, preventing you from stacking three support stones on the primary skill.
• Move Stones: Equip 3 Share Stones. Each Share Stone transmits 25% of the buff's value to teammates, allowing Iron Defense to grant a 75% defense boost to Seadra and Onix.
• Power Stone Sockets: Aim for a layout with at least five or six defensive (blue) Sturdy Stone slots. Prioritize Hit Healing, Natural Healing, and Status Condition Resistance on stone sub-stats.
• Evolution: Evolve Shellder into Cloyster starting at Level 36.

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Seadra Build: Hydro Pump Burst Damage

Seadra functions as the team's primary burst attacker. Hydro Pump creates four water pillars around the target. Because Mewtwo has a wide hit box, multiple geysers can strike simultaneously to deal massive multi-hit damage.

• Move Selection: Secure a single-move Horsea and roll for Hydro Pump after evolving into Seadra at Level 32.
• Move Stones: Equip 1 Broad Stone and 2 Wait Less Stones. Broad Stone widens the area of the water geysers, while Wait Less Stones lower the skill cooldown. Avoid Whack-Whack Stones here: the repeated animation locks Seadra in place too long, leaving it vulnerable to counterattacks.
• Power Stone Sockets: Prioritize Mighty Stones (red) for offensive scaling, but ensure at least two or three Sturdy Stone (blue) slots are equipped with Hit Healing. This allows Seadra to recover lost health immediately upon landing a Hydro Pump.

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Onix Build: Rock Throw Artillery

Onix provides sustained physical damage at medium range, keeping pressure on Mewtwo while Hydro Pump is on cooldown. Because Onix naturally leans toward high defensive base stats and blue stone sockets, it rarely gets knocked out.

• Move Selection: Look for an Onix with a single move slot rolling Rock Throw. Bingo bonuses that reduce the wait time for Rock-type moves increase damage output.
• Cooking Recipe: Attract Onix consistently using the Stone Soup a la Cube recipe: 3 Apricorns, 1 Fossil, and 1 Icy Rock.
• Move Stones: Equip 1 Whack-Whack Stone and 2 Wait Less Stones. Because Onix fires boulders from medium range, the animation lock from a Whack-Whack Stone carries far less risk than it would for a frontline melee fighter.
• Power Stone Sockets: Balance red and blue stones while stacking Hit Healing to ensure continuous self-sustain throughout the fight.

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Mewtwo Boss Battle Execution

Executing this strategy requires maintaining defense buff uptime and coordinating ranged attack timing.

1. Cast Iron Defense Immediately: Activate Cloyster's Iron Defense the moment your team enters the arena so the team-wide 75% buff is active before Mewtwo strikes.
2. Time Hydro Pump: Wait until Mewtwo finishes a movement cycle or commits to an attack before firing Hydro Pump. This prevents the boss from moving out of the geyser cluster.
3. Scatter Away from Charged Attacks: When Mewtwo starts charging an energy blast or Psycho Cut, press the Scatter button. While Cloyster can take the hit, scattering moves Seadra and Onix clear of the blast zone.
4. Sustain Hit Healing with Onix: Keep Onix casting Rock Throw to constantly trigger Hit Healing ticks, keeping team health topped off between revival timers.