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
Kyogre
Water
DEFENSIVE CHECK
View matchup
188.294
63.9%
Standard error 4.87 points
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 252+ Def Kyogre: 177-208 (43.8 - 51.4%) -- 8.2% chance to 2HKO
02
Koraidon
FightingDragon
OFFENSIVE CHECK
View matchup
250.931
62.0%
Standard error 5.02 points
▾
252+ Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 252 HP / 0 Def Ursaluna: 566-668 (121.9 - 143.9%) -- guaranteed OHKO
03
Calyrex-Ice
PsychicIce
DEFENSIVE CHECK
View matchup
38.239
58.9%
Standard error 7.96 points
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 252+ Def Calyrex-Ice: 123-145 (30.4 - 35.8%) -- 45.3% chance to 3HKO
04
Lunala
PsychicGhost
SOFT CHECK
View matchup
164.196
42.8%
Standard error 5.26 points
▾
252+ SpA Lunala Focus Blast vs. 252 HP / 252+ SpD Ursaluna: 248-294 (53.4 - 63.3%) -- guaranteed 2HKO
05
Zacian-Crowned
FairySteel
SOFT CHECK
View matchup
100.445
46.3%
Standard error 7.03 points
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 0 Def Ursaluna: 460-542 (99.1 - 116.8%) -- 93.8% chance to OHKO
06
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
View matchup
134.85
36.4%
Standard error 5.70 points
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Ursaluna: 138-163 (29.7 - 35.1%) -- 17.2% chance to 3HKO
07
Gliscor
GroundFlying
SOFT CHECK
View matchup
44.564
43.2%
Standard error 7.42 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Ursaluna: 139-165 (29.9 - 35.5%) -- 26.7% chance to 3HKO
08
Arceus
Normal
SOFT CHECK
View matchup
77.201
43.6%
Standard error 7.56 points
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 0 Def Ursaluna: 234-276 (50.4 - 59.4%) -- guaranteed 2HKO
09
Arceus-Fairy
Fairy
SOFT CHECK
View matchup
69.995
42.9%
Standard error 8.19 points
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Ursaluna: 169-201 (36.4 - 43.3%) -- guaranteed 3HKO
10
Arceus-Ground
Ground
SOFT CHECK
View matchup
34.962
39.9%
Standard error 8.28 points
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Ursaluna: 195-231 (42 - 49.7%) -- guaranteed 3HKO
11
Ho-Oh
FireFlying
SOFT CHECK
View matchup
204.386
26.3%
Standard error 5.05 points
▾
252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Ursaluna: 207-244 (44.6 - 52.5%) -- 21.5% chance to 2HKO
12
Arceus-Water
Water
SOFT CHECK
View matchup
61.566
38.1%
Standard error 8.65 points
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Ursaluna: 338-402 (72.8 - 86.6%) -- guaranteed 2HKO
13
Eternatus
PoisonDragon
SOFT CHECK
View matchup
62.462
25.1%
Standard error 5.48 points
▾
252+ SpA Eternatus Dynamax Cannon vs. 252 HP / 252+ SpD Ursaluna: 162-192 (34.9 - 41.3%) -- guaranteed 3HKO
14
Arceus-Electric
Electric
SOFT CHECK
View matchup
35.042
28.7%
Standard error 7.64 points
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Ursaluna: 170-202 (36.6 - 43.5%) -- guaranteed 3HKO
15
Giratina-Origin
GhostDragon
SOFT CHECK
View matchup
81.675
12.4%
Standard error 4.93 points
▾
0- SpA Griseous Core Giratina-Origin Draco Meteor vs. 252 HP / 252+ SpD Ursaluna: 147-174 (31.6 - 37.5%) -- 87.1% chance to 3HKO
16
Hatterene
PsychicFairy
SOFT CHECK
View matchup
33.172
16.2%
Standard error 6.39 points
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Ursaluna: 154-183 (33.1 - 39.4%) -- 99.9% chance to 3HKO
17
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
35.156
4.5%
Standard error 3.49 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Ursaluna: 186-220 (40 - 47.4%) -- guaranteed 3HKO
18
Skeledirge
FireGhost
SOFT CHECK
View matchup
26.513
17.4%
Standard error 7.37 points
▾
252+ SpA Skeledirge Torch Song vs. 252 HP / 252+ SpD Ursaluna: 106-126 (22.8 - 27.1%) -- 46.7% chance to 4HKO
19
Groudon
Ground
SOFT CHECK
View matchup
24.096
20.5%
Standard error 8.22 points
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Ursaluna: 229-271 (49.3 - 58.4%) -- 98.8% chance to 2HKO
Ranked #36 with 3.27% usage. Sorted by conservative score.