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Pokemon X and Y Phase 9: Diantha (Champion)

Diantha — Kalos Champion Movie star + Pokemon Champion · Specialty: Mega Gardevoir sweeper finisher Threat-by-threat strategy ★ ★ ★ Optimal Champion lead: Mega Ampharos with Mold B.

Nintendo 3DS Pokemon X / Pokemon Y Pokemon X and Y trainer artwork of Diantha. Phase 9 Champion Diantha Kalos Champion Victory Road, Elite Four, Diantha, and Hall of Fame. 09 / 10 Gardevoir artwork
By Damodar Sharma Updated May 25, 2026 Walkthrough

Phase 9 section 10 of 12

Diantha — Kalos Champion Movie star + Pokemon Champion · Specialty: Mega Gardevoir sweeper finisher Threat-by-threat strategy ★ ★ ★ Optimal Champion lead: Mega Ampharos with Mold B.

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Diantha (Champion)

Pokemon X and Y artwork of Diantha.

Diantha — Kalos Champion

Movie star + Pokémon Champion · Specialty: Mega Gardevoir sweeper finisher
PokémonLvTypeNotes
Hawlucha
Hawlucha
64Fighting/FlyingLimber. Flying Press + X-Scissor + Poison Jab + Swords Dance.
Tyrantrum
Tyrantrum
65Rock/DragonStrong Jaw. Head Smash + Earthquake + Dragon Claw + Crunch. ★ Head Smash + Strong Jaw bite combos.
Aurorus
Aurorus
65Rock/IceRefrigerate. Thunder + Blizzard + Light Screen + Reflect.
Gourgeist
Gourgeist
65Ghost/GrassFrisk / Pickup. Phantom Force + Trick-or-Treat + Seed Bomb + Shadow Sneak. Trick-or-Treat adds Ghost typing to opponent.
Goodra
Goodra
66DragonSap Sipper / Hydration / Gooey. Dragon Pulse + Focus Blast + Muddy Water + Fire Blast. Very bulky special.
Gardevoir
Gardevoir → Mega Gardevoir
68Psychic/Fairy★ ★ ★ Her ace. Mega Evolves first turn via Mega Ring. Pixilate boosts Normal moves to Fairy. Moonblast + Psychic + Shadow Ball + Thunderbolt. Weak to Poison, Ghost, Steel.

Threat-by-threat strategy

MonCounterWhy
Hawlucha (lead)Psychic / Fairy / Electric / FlyingMega Ampharos's Thunderbolt one-shots. Greninja with Surf works too (Hawlucha takes Water 2×? No, Water is neutral on Fighting+Flying — bad target). Stick to Psychic.
TyrantrumFairy / Fighting / Steel / Ice / Ground / Dragon★ Strong Jaw + Head Smash is a 1-shot threat. Bring Mega Lucario or Garchomp's Earthquake. Watch Earthquake back.
AurorusFighting / Steel / Rock / Ground / Water / Grass4× weak to Fighting + Steel. Mega Lucario's Bullet Punch or Aura Sphere ends it.
GourgeistFire / Flying / Ice / Ghost / DarkPhantom Force is a 2-turn move, so use it as a switch opportunity. Mega Charizard Y's Flamethrower is a clean answer.
GoodraFairy / Ice / DragonBulky. Use special attackers. Xerneas's Moonblast or Sylveon's Hyper Voice (Pixilate) one-shots.
Mega Gardevoir (ace)★ Poison / Ghost / Steel★ ★ ★ The whole fight is about surviving Mega Gardevoir. Aegislash's Iron Head or Shadow Sneak. Mega Gengar's Sludge Bomb + Shadow Ball. Bisharp's Sucker Punch priority. Don't let her set up Calm Mind — she will if given the turn.
★ ★ ★ Optimal Champion lead: Mega Ampharos with Mold Breaker + Thunderbolt → Hawlucha one-shot, then pivot to Garchomp/Aegislash for the rest. Save your strongest Steel mon (Aegislash) for Mega Gardevoir — Iron Head + King's Shield handles her cleanly.

What Mega to bring vs Mega Gardevoir?

  • Mega Lucario — Bullet Punch priority + Adaptability Steel STAB. ★ ★ ★ One-shot likely.
  • Aegislash — Iron Head with Stance Change. ★ ★ Tank her Psychic, then attack.
  • Mega Gengar — Sludge Bomb (Poison 2×) + Shadow Ball. Outspeeds Mega Gardevoir.
  • Mega Charizard X — Flare Blitz, but Charizard X is Fire/Dragon — Dragon weak to Fairy. Bench unless you can OHKO.

Dex quick links

Pokemon in this phase