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
Ting-Lu
DarkGround
DEFENSIVE CHECK
View matchup
44.104
70.2%
Standard error 6.89 points
▾
252+ SpA Arceus-Ghost Aura Sphere vs. 252 HP / 252+ SpD Vessel of Ruin Ting-Lu: 114-136 (22.1 - 26.4%) -- possible 5HKO
02
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
View matchup
198.034
64.1%
Standard error 5.85 points
▾
+1 252+ Atk Zacian-Crowned Crunch vs. 252 HP / 0 Def Arceus-Ghost: 272-322 (61.2 - 72.5%) -- guaranteed 2HKO
03
Kyogre
Water
DEFENSIVE CHECK
View matchup
365.496
58.4%
Standard error 4.44 points
▾
252+ SpA Spooky Plate Arceus-Ghost Judgment vs. 252 HP / 252+ SpD Kyogre: 117-138 (28.9 - 34.1%) -- 2.1% chance to 3HKO
04
Koraidon
FightingDragon
SOFT CHECK
View matchup
508.314
53.4%
Standard error 3.81 points
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Arceus-Ghost in Sun: 253-298 (56.9 - 67.1%) -- guaranteed 2HKO
05
Arceus
Normal
SOFT CHECK
View matchup
202.514
49.4%
Standard error 6.06 points
▾
252+ Atk Arceus Shadow Claw vs. 252 HP / 0 Def Arceus-Ghost: 136-162 (30.6 - 36.4%) -- 60.1% chance to 3HKO
06
Eternatus
PoisonDragon
SOFT CHECK
View matchup
124.832
54.3%
Standard error 7.60 points
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Arceus-Ghost: 148-175 (33.3 - 39.4%) -- guaranteed 3HKO
07
Arceus-Electric
Electric
DEFENSIVE CHECK
View matchup
22.768
64.1%
Standard error 10.06 points
▾
252+ SpA Spooky Plate Arceus-Ghost Judgment vs. 252 HP / 252+ SpD Arceus-Electric: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
08
Ho-Oh
FireFlying
SOFT CHECK
View matchup
380.763
40.1%
Standard error 4.34 points
▾
252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Arceus-Ghost: 184-217 (41.4 - 48.8%) -- guaranteed 3HKO
09
Lunala
PsychicGhost
SOFT CHECK
View matchup
159.985
47.0%
Standard error 6.78 points
▾
252+ SpA Lunala Moongeist Beam vs. 252 HP / 252+ SpD Arceus-Ghost: 236-282 (53.1 - 63.5%) -- guaranteed 2HKO
10
Calyrex-Ice
PsychicIce
SOFT CHECK
View matchup
97.741
52.7%
Standard error 8.61 points
▾
252+ Atk Calyrex-Ice Glacial Lance vs. 252 HP / 0 Def Arceus-Ghost: 220-261 (49.5 - 58.7%) -- 98.8% chance to 2HKO
11
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
27.468
55.5%
Standard error 9.48 points
▾
252+ SpA Arceus-Ghost Aura Sphere vs. 252 HP / 252+ SpD Kingambit: 292-344 (72.2 - 85.1%) -- guaranteed 2HKO
12
Arceus-Ground
Ground
SOFT CHECK
View matchup
77.947
47.0%
Standard error 7.96 points
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Arceus-Ghost: 174-205 (39.1 - 46.1%) -- guaranteed 3HKO
13
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
View matchup
220.703
36.8%
Standard error 5.60 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus-Ghost: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
14
Grimmsnarl
DarkFairy
SOFT CHECK
View matchup
24.692
53.0%
Standard error 10.04 points
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 0 Def Arceus-Ghost: 130-154 (29.2 - 34.6%) -- 6.3% chance to 3HKO
15
Arceus-Fairy
Fairy
SOFT CHECK
View matchup
85.646
36.9%
Standard error 7.25 points
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Arceus-Ghost: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
16
Blissey
Normal
SOFT CHECK
View matchup
76.018
25.0%
Standard error 6.28 points
▾
0- SpA Blissey Shadow Ball vs. 252 HP / 252+ SpD Arceus-Ghost: 54-64 (12.1 - 14.4%) -- possible 7HKO
17
Terapagos
Normal
SOFT CHECK
View matchup
105.892
27.5%
Standard error 7.37 points
▾
0- SpA Terapagos Earth Power vs. 252 HP / 252+ SpD Arceus-Ghost: 27-32 (6 - 7.2%)
18
Giratina-Origin
GhostDragon
SOFT CHECK
View matchup
79.544
31.7%
Standard error 9.01 points
▾
252+ Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Arceus-Ghost: 384-452 (86.4 - 101.8%) -- 12.5% chance to OHKO
19
Arceus-Water
Water
SOFT CHECK
View matchup
20.667
38.2%
Standard error 10.69 points
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Arceus-Ghost: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
20
Ribombee
BugFairy
SOFT CHECK
View matchup
21.139
36.0%
Standard error 10.44 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus-Ghost: 88-105 (19.8 - 23.6%) -- possible 5HKO
21
Glimmora
RockPoison
SOFT CHECK
View matchup
57.982
16.0%
Standard error 5.76 points
▾
0- SpA Glimmora Power Gem vs. 252 HP / 252+ SpD Arceus-Ghost: 63-75 (14.1 - 16.8%) -- possible 6HKO
22
Hatterene
PsychicFairy
SOFT CHECK
View matchup
110.872
6.4%
Standard error 4.00 points
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Arceus-Ghost: 118-141 (26.5 - 31.7%) -- guaranteed 4HKO
23
Groudon
Ground
SOFT CHECK
View matchup
24.358
25.0%
Standard error 8.77 points
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Arceus-Ghost: 204-241 (45.9 - 54.2%) -- 54.3% chance to 2HKO
24
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
25.354
11.9%
Standard error 6.43 points
▾
252+ Atk Landorus-Therian Crunch vs. 252 HP / 0 Def Arceus-Ghost: 178-210 (40 - 47.2%) -- guaranteed 3HKO
25
Gliscor
GroundFlying
SOFT CHECK
View matchup
22.539
13.3%
Standard error 7.16 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Arceus-Ghost: 124-147 (27.9 - 33.1%) -- guaranteed 4HKO
26
Skeledirge
FireGhost
SOFT CHECK
View matchup
20.071
16.1%
Standard error 8.21 points
▾
252+ SpA Skeledirge Shadow Ball vs. 252 HP / 252+ SpD Arceus-Ghost: 164-194 (36.9 - 43.6%) -- guaranteed 3HKO
Ranked #25 with 5.68% usage. Sorted by conservative score.