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
Arceus-Ground
Ground
DEFENSIVE CHECK
View matchup
99.513
81.0%
Standard error 6.66 points
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Arceus-Ground: 130-154 (29.2 - 34.6%) -- 7.5% chance to 3HKO
02
Calyrex-Ice
PsychicIce
DEFENSIVE CHECK
View matchup
155.357
71.8%
Standard error 6.09 points
▾
252+ SpA Zap Plate Arceus-Electric Judgment vs. 252 HP / 252+ SpD Calyrex-Ice: 123-145 (30.4 - 35.8%) -- 45.3% chance to 3HKO
03
Koraidon
FightingDragon
SOFT CHECK
View matchup
729.94
51.8%
Standard error 3.19 points
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Arceus-Electric in Sun: 253-298 (56.9 - 67.1%) -- guaranteed 2HKO
04
Lunala
PsychicGhost
SOFT CHECK
View matchup
230.873
53.7%
Standard error 5.62 points
▾
+1 252+ SpA Lunala Meteor Beam vs. 252 HP / 252+ SpD Arceus-Electric: 142-168 (31.9 - 37.8%) -- 93.9% chance to 3HKO
05
Ting-Lu
DarkGround
DEFENSIVE CHECK
View matchup
100.706
63.7%
Standard error 8.28 points
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Vessel of Ruin Ting-Lu: 128-152 (24.9 - 29.5%) -- possible 5HKO
06
Ursaluna
GroundNormal
OFFENSIVE CHECK
View matchup
35.042
60.5%
Standard error 8.26 points
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Arceus-Electric: 390-458 (87.8 - 103.1%) -- 25% chance to OHKO
07
Arceus
Normal
SOFT CHECK
View matchup
173.887
52.7%
Standard error 6.46 points
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 0 Def Arceus-Electric: 210-247 (47.2 - 55.6%) -- 76.2% chance to 2HKO
08
Blissey
Normal
DEFENSIVE CHECK
View matchup
79.207
62.5%
Standard error 9.37 points
▾
0- Atk Arceus-Electric Dragon Tail vs. 252 HP / 0 Def Blissey: 191-225 (26.7 - 31.5%) -- guaranteed 4HKO
09
Eternatus
PoisonDragon
SOFT CHECK
View matchup
141.169
51.9%
Standard error 7.25 points
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Arceus-Electric: 148-175 (33.3 - 39.4%) -- guaranteed 3HKO
10
Clodsire
PoisonGround
DEFENSIVE CHECK
View matchup
45.241
61.9%
Standard error 10.02 points
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Clodsire: 146-174 (31.4 - 37.5%) -- 87.4% chance to 3HKO
11
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
View matchup
264.329
42.7%
Standard error 5.23 points
▾
0- Atk Necrozma-Dusk-Mane Earthquake vs. 252 HP / 0 Def Arceus-Electric: 164-194 (36.9 - 43.6%) -- guaranteed 3HKO
12
Terapagos
Normal
DEFENSIVE CHECK
View matchup
28.503
58.4%
Standard error 9.23 points
▾
252+ SpA Zap Plate Arceus-Electric Judgment vs. 252 HP / 252+ SpD Terapagos: 163-193 (42.4 - 50.2%) -- 0.4% chance to 2HKO
13
Groudon
Ground
SOFT CHECK
View matchup
69.368
53.3%
Standard error 8.13 points
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Arceus-Electric: 408-482 (91.8 - 108.5%) -- 56.3% chance to OHKO
14
Zacian-Crowned
FairySteel
SOFT CHECK
View matchup
284.776
40.2%
Standard error 4.99 points
▾
+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Arceus-Electric: 229-271 (51.5 - 61%) -- guaranteed 2HKO
15
Kyogre
Water
SOFT CHECK
View matchup
426.483
29.7%
Standard error 3.82 points
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Arceus-Electric in Rain: 427-504 (96.1 - 113.5%) -- 75% chance to OHKO
16
Arceus-Electric
Electric
SOFT CHECK
View matchup
48.03
50.0%
Standard error 10.20 points
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Arceus-Electric: 65-77 (14.6 - 17.3%) -- possible 6HKO
17
Ho-Oh
FireFlying
SOFT CHECK
View matchup
402.508
18.4%
Standard error 3.29 points
▾
252+ Atk Ho-Oh Earthquake vs. 252 HP / 0 Def Arceus-Electric: 204-242 (45.9 - 54.5%) -- 56.6% chance to 2HKO
18
Arceus-Fairy
Fairy
SOFT CHECK
View matchup
148.298
29.7%
Standard error 6.37 points
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Arceus-Electric: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
19
Dondozo
Water
SOFT CHECK
View matchup
20.007
0.0%
Standard error 0.00 points
▾
252+ Atk Dondozo Liquidation vs. 252 HP / 0 Def Arceus-Electric: 109-129 (24.5 - 29%) -- 99.5% chance to 4HKO
20
Deoxys-Speed
Psychic
SOFT CHECK
View matchup
53.139
34.4%
Standard error 9.17 points
▾
252+ SpA Deoxys-Speed Psycho Boost vs. 252 HP / 252+ SpD Arceus-Electric: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
21
Ribombee
BugFairy
SOFT CHECK
View matchup
40.304
24.0%
Standard error 6.73 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus-Electric: 88-105 (19.8 - 23.6%) -- possible 5HKO
22
Giratina-Origin
GhostDragon
SOFT CHECK
View matchup
82.614
21.9%
Standard error 6.39 points
▾
252+ Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Arceus-Electric: 192-226 (43.2 - 50.9%) -- 3.1% chance to 2HKO
23
Glimmora
RockPoison
SOFT CHECK
View matchup
46.982
32.6%
Standard error 9.18 points
▾
0- SpA Glimmora Sludge Bomb vs. 252 HP / 252+ SpD Arceus-Electric: 70-84 (15.7 - 18.9%) -- possible 6HKO
24
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
30.887
27.6%
Standard error 8.05 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Arceus-Electric: 332-392 (74.7 - 88.2%) -- guaranteed 2HKO
25
Hatterene
PsychicFairy
SOFT CHECK
View matchup
144.313
14.1%
Standard error 4.94 points
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Arceus-Electric: 118-141 (26.5 - 31.7%) -- guaranteed 4HKO
26
Arceus-Ghost
Ghost
SOFT CHECK
View matchup
22.768
33.9%
Standard error 9.92 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
27
Gliscor
GroundFlying
SOFT CHECK
View matchup
62.695
20.6%
Standard error 7.11 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Arceus-Electric: 248-294 (55.8 - 66.2%) -- guaranteed 2HKO
28
Arceus-Water
Water
SOFT CHECK
View matchup
85.578
20.6%
Standard error 7.52 points
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Arceus-Electric: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
29
Ditto
Normal
SOFT CHECK
View matchup
23.815
24.4%
Standard error 8.80 points
▾
Ditto vs. Arceus-Electric: 0-0 (0 - 0%)
30
Skeledirge
FireGhost
SOFT CHECK
View matchup
22.924
23.0%
Standard error 8.79 points
▾
252+ SpA Skeledirge Earth Power vs. 252 HP / 252+ SpD Arceus-Electric: 124-146 (27.9 - 32.8%) -- guaranteed 4HKO
Ranked #26 with 5.30% usage. Sorted by conservative score.