Is Diancie-Mega viable in Gen 9 National Dex Ubers?

Diancie-Mega is ranked #42 in Gen 9 National Dex Ubers with 2.70% usage according to Smogon Apr 2026 - Jun 2026 data.

What beats Diancie-Mega in Gen 9 National Dex Ubers?

The best counter for Diancie-Mega in Gen 9 National Dex Ubers is Groudon-Primal with a 64.4% win rate when they meet. Based on Smogon's Apr 2026 - Jun 2026 usage data, the top Pokémon that beat Diancie-Mega include Groudon-Primal, Yveltal.

What is the best counter for Diancie-Mega in Gen 9 National Dex Ubers?

Groudon-Primal is the best counter for Diancie-Mega in Gen 9 National Dex Ubers, KOing or forcing it out in 64.4% of their encounters.

Diancie-Mega counters

Gen 9 National Dex Ubers · Sorted by reliability score · Smogon · Apr 2026 - Jun 2026

#0719 Diancie-Mega

RockFairy

USAGE 2.7% #42

BASE STATS

HP 50

ATK 160

DEF 110

SPA 160

SPD 110

SPE 110

BST700

TYPE MATCHUPS

4×

Steel

2×

WaterGrassGround

½×

NormalFireFlyingBugDark

0×

Dragon

Moves

Moonblast 94.4% Earth Power 87.9% Diamond Storm 61.9% Trick Room 31.2% Stealth Rock 29.9% Substitute 21.6% Spikes 13.6% Explosion 12.5%

Items

Diancite 100.0%

Common Teammates

Groudon-Primal42.5%

Mewtwo31.3%

Ogerpon-Hearthflame31.2%

Slurpuff30.8%

Giratina-Origin30.6%

Yveltal27.8%

Necrozma-Dusk-Mane24.2%

Ho-Oh23.3%

Checks & Counters

Ranked by reliability — blends KO rate with how often each Pokémon is matched up.

# Checker Encounters Reliability KO Rate

Groudon-Primal

GroundFire OFFENSIVE CHECK

54.216

64.4% dies 9.15%

DAMAGE CALCHarsh Sunshine

252+ Atk Groudon-Primal Precipice Blades vs. 252 HP / 0 Def Diancie-Mega: 510-600 (167.7 - 197.3%) -- guaranteed OHKO

View Groudon-Primal counters → Teams with Groudon-Primal →

Yveltal

DarkFlying SOFT CHECK

26.29

8.9% dies 5.56%

DAMAGE CALC

0- Atk Life Orb Dark Aura Yveltal Foul Play vs. 252 HP / 0 Def Diancie-Mega: 109-130 (35.8 - 42.7%) -- guaranteed 3HKO

View Yveltal counters → Teams with Yveltal →

Ranked #42 with 2.70% usage. Sorted by reliability score.