Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.
How to read this table
Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.
#
Checker
Encounters
Conservative score
Target KO or switch rate
01
Corviknight
FlyingSteel
DEFENSIVE CHECK
View matchup
112.718
81.3%
Standard error 3.67 points
▾
0- Atk Necrozma-Dusk-Mane Knock Off (97.5 BP) vs. 252 HP / 0 Def Corviknight: 90-106 (22.5 - 26.5%) -- 16.9% chance to 4HKO
02
Arceus-Dark
Dark
DEFENSIVE CHECK
View matchup
49.292
85.8%
Standard error 4.96 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus-Dark: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
03
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
298.114
74.9%
Standard error 2.51 points
▾
0- Atk Necrozma-Dusk-Mane Earthquake vs. 252 HP / 0 Def Kingambit: 164-194 (40.5 - 48%) -- guaranteed 3HKO
04
Skarmory
SteelFlying
DEFENSIVE CHECK
View matchup
141.156
72.5%
Standard error 3.76 points
▾
252+ SpA Necrozma-Dusk-Mane Photon Geyser vs. 252 HP / 252+ SpD Skarmory: 73-87 (21.8 - 26%) -- 3.7% chance to 4HKO
05
Lunala
PsychicGhost
OFFENSIVE CHECK
View matchup
817.588
63.0%
Standard error 1.69 points
▾
252+ SpA Lunala Moongeist Beam vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 190-225 (47.7 - 56.5%) -- 85.9% chance to 2HKO
06
Arceus-Ground
Ground
DEFENSIVE CHECK
View matchup
444.076
64.6%
Standard error 2.27 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus-Ground: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
07
Arceus
Normal
DEFENSIVE CHECK
View matchup
859.092
60.7%
Standard error 1.67 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
08
Arceus-Ghost
Ghost
DEFENSIVE CHECK
View matchup
199.167
62.1%
Standard error 3.44 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus-Ghost: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
09
Kyogre
Water
SOFT CHECK
View matchup
1,344.782
53.4%
Standard error 1.36 points
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Necrozma-Dusk-Mane in Rain: 456-537 (114.5 - 134.9%) -- guaranteed OHKO
10
Arceus-Water
Water
DEFENSIVE CHECK
View matchup
437.689
57.2%
Standard error 2.36 points
▾
252+ SpA Necrozma-Dusk-Mane Photon Geyser vs. 252 HP / 252+ SpD Arceus-Water: 103-123 (23.1 - 27.7%) -- 73.7% chance to 4HKO
11
Giratina-Origin
GhostDragon
SOFT CHECK
View matchup
375.782
54.4%
Standard error 2.57 points
▾
252+ Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 274-324 (68.8 - 81.4%) -- guaranteed 2HKO
12
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
View matchup
1,343.78
48.9%
Standard error 1.36 points
▾
0- Atk Necrozma-Dusk-Mane Earthquake vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 118-139 (29.6 - 34.9%) -- 13.7% chance to 3HKO
13
Ting-Lu
DarkGround
DEFENSIVE CHECK
View matchup
194.275
57.0%
Standard error 3.55 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Ting-Lu: 118-141 (22.9 - 27.4%) -- possible 5HKO
14
Groudon
Ground
SOFT CHECK
View matchup
220.548
54.0%
Standard error 3.36 points
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 292-346 (73.3 - 86.9%) -- guaranteed 2HKO
15
Arceus-Electric
Electric
SOFT CHECK
View matchup
324.098
50.0%
Standard error 2.78 points
▾
252+ SpA Zap Plate Arceus-Electric Judgment vs. 252 HP / 252+ SpD Necrozma-Dusk-Mane: 138-163 (34.6 - 40.9%) -- guaranteed 3HKO
16
Chi-Yu
DarkFire
OFFENSIVE CHECK
View matchup
24.891
73.8%
Standard error 8.81 points
▾
252+ SpA Beads of Ruin Chi-Yu Overheat vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 325-384 (81.6 - 96.4%) -- guaranteed 2HKO
17
Skeledirge
FireGhost
SOFT CHECK
View matchup
199.43
52.3%
Standard error 3.54 points
▾
252+ SpA Skeledirge Torch Song vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 130-154 (32.6 - 38.6%) -- 99.3% chance to 3HKO
18
Calyrex-Ice
PsychicIce
SOFT CHECK
View matchup
605.029
46.0%
Standard error 2.03 points
▾
252+ Atk Calyrex-Ice High Horsepower vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 166-196 (41.7 - 49.2%) -- guaranteed 3HKO
19
Koraidon
FightingDragon
SOFT CHECK
View matchup
1,958.713
42.3%
Standard error 1.12 points
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane in Sun: 360-424 (90.4 - 106.5%) -- 43.8% chance to OHKO
20
Ho-Oh
FireFlying
SOFT CHECK
View matchup
1,198.408
42.2%
Standard error 1.43 points
▾
252+ Atk Ho-Oh Flare Blitz vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 262-310 (65.8 - 77.8%) -- guaranteed 2HKO
21
Zacian-Crowned
FairySteel
SOFT CHECK
View matchup
1,386.336
31.1%
Standard error 1.24 points
▾
+1 252+ Atk Zacian-Crowned Crunch vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 195-231 (48.9 - 58%) -- 96.1% chance to 2HKO
22
Chien-Pao
DarkIce
OFFENSIVE CHECK
View matchup
44.761
55.7%
Standard error 7.42 points
▾
252+ Atk Sword of Ruin Chien-Pao Crunch vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 222-262 (55.7 - 65.8%) -- guaranteed 2HKO
23
Garganacl
Rock
SOFT CHECK
View matchup
70.231
49.0%
Standard error 5.97 points
▾
252+ Atk Garganacl Earthquake vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 123-145 (30.9 - 36.4%) -- 63.9% chance to 3HKO
24
Ditto
Normal
SOFT CHECK
View matchup
298.873
34.2%
Standard error 2.74 points
▾
Ditto vs. Necrozma-Dusk-Mane: 0-0 (0 - 0%)
25
Deoxys-Attack
Psychic
SOFT CHECK
View matchup
232.72
35.7%
Standard error 3.14 points
▾
0- Atk Deoxys-Attack Knock Off (97.5 BP) vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 129-153 (32.4 - 38.4%) -- 97.1% chance to 3HKO
26
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
355.926
32.7%
Standard error 2.49 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Prism Armor Necrozma-Dusk-Mane: 238-280 (59.7 - 70.3%) -- guaranteed 2HKO
27
Mewtwo
Psychic
SOFT CHECK
View matchup
54.193
49.2%
Standard error 6.79 points
▾
252+ SpA Life Orb Mewtwo Fire Blast vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 199-234 (50 - 58.7%) -- guaranteed 2HKO
28
Eternatus
PoisonDragon
SOFT CHECK
View matchup
584.093
26.6%
Standard error 1.83 points
▾
252+ SpA Eternatus Fire Blast vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 145-172 (36.4 - 43.2%) -- guaranteed 3HKO
29
Dondozo
Water
SOFT CHECK
View matchup
165.352
32.2%
Standard error 3.63 points
▾
252+ Atk Dondozo Wave Crash vs. 252 HP / 0 Def Necrozma-Dusk-Mane: 147-174 (36.9 - 43.7%) -- guaranteed 3HKO
30
Flutter Mane
GhostFairy
SOFT CHECK
View matchup
120.18
33.5%
Standard error 4.31 points
▾
252+ SpA Life Orb Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Prism Armor Necrozma-Dusk-Mane: 199-234 (50 - 58.7%) -- guaranteed 2HKO
Ranked #4 with 34.76% usage. Sorted by conservative score.