Kalos walkthrough section
Pokemon X and Y Phase 8: Xerneas / Yveltal — Box Legendary Catch
Iceberg Badge At the bottom of the HQ is a glowing chamber housing the legendary. The legendary is locked into the bottom of the cage — you can save before, then trigger the encounter, weaken, and capture.
Phase 8 Iceberg Badge Wulfric Snowbelle Gym Leader Frost Cavern, Lysandre Labs, Team Flare HQ, and Wulfric. 08 / 10 
Phase 8 section 6 of 14
At the bottom of the HQ is a glowing chamber housing the legendary. The legendary is locked into the bottom of the cage — you can save before, then trigger the encounter, weaken, and capture.
Xerneas / Yveltal — Box Legendary Catch
At the bottom of the HQ is a glowing chamber housing the legendary. The legendary is locked into the bottom of the cage — you can save before, then trigger the encounter, weaken, and capture.
Xerneas (Pokémon X exclusive)
Moves: Take Down, Aurora Beam, Geomancy, Megahorn (approx).
Geomancy: Charges turn 1, boosts Sp.Atk + Sp.Def + Speed +2 turn 2. Insanely strong setup.
Catch tip: Use False Swipe to chip to 1 HP, paralyze with Thunder Wave / sleep with Sleep Powder, then throw Ultra Balls. Repeat Balls work great if Xerneas is in your Pokédex (it should be — boss fight registers).
Master Ball: ★ This is the canonical Master Ball target if you didn't burn it on Mewtwo. Save scum first.
Yveltal (Pokémon Y exclusive)
Moves: Oblivion Wing, Dark Pulse, Hurricane, Snarl (approx).
Oblivion Wing: Recovers 75% of damage dealt — Yveltal heals through long fights. Dark Aura boosts Dark moves to 1.33× for everyone in battle (including you).
Catch tip: Same False Swipe + status + Ultra Ball plan. Repeat Balls work if registered.
Master Ball target? ★ Strong choice on Y, same as Xerneas on X.
- Save your game BEFORE entering the chamber.
- Lead with a False Swipe user (Pangoro, Bisharp, Gallade — anything with False Swipe TM). Chip Xerneas/Yveltal to 1 HP.
- Switch to a status user — Smeargle or Klefki with Thunder Wave / Sleep Powder. Paralyze or sleep the legendary.
- Start throwing balls: Ultra Ball, Dusk Ball (if in a cave — but the chamber is bright, so Ultra is better), Timer Ball (better after 10+ turns).
- If you have Master Ball from the Poké Ball Factory: 100% catch, no risk.
- If you KO it by accident: It respawns in the chamber — walk back in. You don't lose the chance.
Dex quick links
