Mega Eelektross / Pelipper / Garchomp Soak Offense

Synergy

Mega Eelektross is the central win condition, leveraging its Eelevate ability to gain +1 to its highest stat on each knockout and snowball. Choice Scarf Pelipper sets rain and uses Soak to convert opponents into Water types, letting Eelektross follow up with Thunder for immediate one-hit knockouts that trigger Eelevate. Grimmsnarl provides Prankster screens to keep Eelektross healthy while it builds boosts, Raichu offers Lightning Rod to absorb Discharge damage and punish with Endeavor on Focus Sash, Sinistcha supplies Hospitality healing and Rage Powder redirection, and Life Orb Garchomp provides burst physical damage that pairs cleanly with Eelektross's Ground immunity from Eelevate.

Win Conditions

Pelipper Soak into Eelektross Thunder secures an early knockout to trigger Eelevate; subsequent Discharge boosts and spread damage let Eelektross sweep. Alternatively, Grimmsnarl sets screens for a slower chip-and-heal strategy with Sinistcha, or Raichu Fake Out + Discharge gives Eelektross an immediate special attack boost via Lightning Rod.

Lead Options

Pelipper + Eelektross, Raichu + Eelektross, Grimmsnarl + Eelektross

Threats

Fairy types (Sylveon, Primarina, Clefable) that resist Eelektross's Electric coverage and can OHKO back; Dragon types (Hydreigon, Kommo-o) that wall Electric attacks; opposing Sinistcha cores that can heal through chip; Mega Swampert in rain whose Wave Crash OHKOs in rain; doubling up on Eelektross before it lands a hit.