Is Diancie-Mega viable in Gen 7 OU?

Diancie-Mega is ranked #26 in Gen 7 OU with 7.21% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Diancie-Mega in Gen 7 OU?

The best counter for Diancie-Mega in Gen 7 OU is Ferrothorn with a 79.5% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Diancie-Mega include Ferrothorn, Greninja, Excadrill, Scizor-Mega, Tapu Koko.

What is the best counter for Diancie-Mega in Gen 7 OU?

Ferrothorn is the best counter for Diancie-Mega in Gen 7 OU, KOing or forcing it out in 79.5% of their encounters.

Diancie-Mega counters

Gen 7 OU · Sorted by reliability score · Smogon · Feb 2026 - Apr 2026

#0719 Diancie-Mega

RockFairy

USAGE 7.2% #26

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

Stealth Rock 67.6% Diamond Storm 67.4% Moonblast 66.9% Earth Power 52.5% Endeavor 43.6% Substitute 42.6% Protect 22.6% Hidden Power Fire 17.7%

Items

Diancite 100.0%

Common Teammates

Volcarona42.6%

Dragonite42.5%

Landorus-Therian41.4%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Ferrothorn

GrassSteel DEFENSIVE COUNTER

81.601

79.5% dies 7.46%

DAMAGE CALC

0- SpA Diancie-Mega Hidden Power Fire vs. 252 HP / 0 SpD Ferrothorn: 208-248 (59 - 70.4%) -- guaranteed 2HKO after Leftovers recovery

View Ferrothorn counters → Teams with Ferrothorn →

Greninja

WaterDark OFFENSIVE CHECK

126.665

78.5% dies 6.25%

DAMAGE CALC

252+ SpA Choice Specs Greninja Hydro Pump vs. 252 HP / 252+ SpD Diancie-Mega: 338-402 (111.1 - 132.2%) -- guaranteed OHKO

View Greninja counters → Teams with Greninja →

Excadrill

GroundSteel OFFENSIVE CHECK

67.062

75.1% dies 7.34%

DAMAGE CALC

252+ Atk Mold Breaker Excadrill Iron Head vs. 252 HP / 0 Def Diancie-Mega: 544-648 (178.9 - 213.1%) -- guaranteed OHKO

View Excadrill counters → Teams with Excadrill →

Scizor-Mega

BugSteel OFFENSIVE CHECK

21.049

71.0% dies 9.90%

DAMAGE CALC

252+ Atk Technician Scizor-Mega Bullet Punch vs. 252 HP / 0 Def Diancie-Mega: 444-528 (146 - 173.6%) -- guaranteed OHKO

View Scizor-Mega counters → Teams with Scizor-Mega →

Tapu Koko

ElectricFairy OFFENSIVE CHECK

58.347

66.0% dies 8.54%

DAMAGE CALCElectric Terrain

252+ SpA Life Orb Tapu Koko Thunderbolt vs. 252 HP / 252+ SpD Diancie-Mega in Electric Terrain: 172-203 (56.5 - 66.7%) -- guaranteed 2HKO

View Tapu Koko counters → Teams with Tapu Koko →

Chansey

Normal DEFENSIVE COUNTER

21.284

63.4% dies 10.44%

DAMAGE CALC

252+ Atk Diancie-Mega Diamond Storm vs. 252 HP / 252+ Def Eviolite Chansey: 279-328 (39.6 - 46.5%) -- guaranteed 3HKO

View Chansey counters → Teams with Chansey →

Kartana

GrassSteel OFFENSIVE CHECK

52.791

56.4% dies 9.46%

DAMAGE CALC

252+ Atk Kartana Smart Strike vs. 252 HP / 0 Def Diancie-Mega: 600-708 (197.3 - 232.8%) -- guaranteed OHKO

View Kartana counters → Teams with Kartana →

Toxapex

PoisonWater SOFT CHECK

74.929

51.6% dies 8.16%

DAMAGE CALC

252+ SpA Toxapex Scald vs. 252 HP / 252+ SpD Diancie-Mega: 114-134 (37.5 - 44%) -- guaranteed 3HKO

View Toxapex counters → Teams with Toxapex →

Magearna

SteelFairy SOFT CHECK

122.778

50.8% dies 7.78%

DAMAGE CALC

0- Atk Magearna Iron Head vs. 252 HP / 0 Def Diancie-Mega: 276-328 (90.7 - 107.8%) -- 50% chance to OHKO

View Magearna counters → Teams with Magearna →

Tapu Fini

WaterFairy SOFT CHECK

24.486

47.9% dies 10.10%

DAMAGE CALCMisty Terrain

252+ SpA Tapu Fini Surf vs. 252 HP / 252+ SpD Diancie-Mega: 176-210 (57.8 - 69%) -- guaranteed 2HKO

View Tapu Fini counters → Teams with Tapu Fini →

Landorus-Therian

GroundFlying SOFT CHECK

167.977

47.6% dies 6.62%

DAMAGE CALC

252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Diancie-Mega: 360-426 (118.4 - 140.1%) -- guaranteed OHKO

View Landorus-Therian counters → Teams with Landorus-Therian →

Garchomp

DragonGround SOFT CHECK

23.154

42.6% dies 10.28%

DAMAGE CALC

252+ Atk Garchomp Earthquake vs. 252 HP / 0 Def Diancie-Mega: 332-392 (109.2 - 128.9%) -- guaranteed OHKO

View Garchomp counters → Teams with Garchomp →

Tornadus-Therian

Flying SOFT CHECK

48.775

20.9% dies 8.23%

DAMAGE CALC

252+ SpA Tornadus-Therian Focus Blast vs. 252 HP / 252+ SpD Diancie-Mega: 86-102 (28.2 - 33.5%) -- 0.1% chance to 3HKO

View Tornadus-Therian counters → Teams with Tornadus-Therian →

Heatran

FireSteel SOFT CHECK

57.42

15.9% dies 6.73%

DAMAGE CALC

252+ SpA Heatran Earth Power vs. 252 HP / 252+ SpD Diancie-Mega: 146-174 (48 - 57.2%) -- 91.8% chance to 2HKO

View Heatran counters → Teams with Heatran →

Ranked #26 with 7.21% usage. Sorted by reliability score.