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
Kyurem-Black
DragonIce
OFFENSIVE CHECK
View matchup
179.663
85.2%
Standard error 2.65 points
▾
252+ Atk Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Landorus-Therian: 1344-1584 (351.8 - 414.6%) -- guaranteed OHKO
02
Swampert-Mega
WaterGround
OFFENSIVE CHECK
View matchup
372.034
77.3%
Standard error 2.17 points
▾
252+ Atk Swampert-Mega Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 436-516 (114.1 - 135%) -- guaranteed OHKO
03
Latias-Mega
DragonPsychic
DEFENSIVE CHECK
View matchup
270.865
75.3%
Standard error 2.62 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Latias-Mega: 206-243 (56.5 - 66.7%) -- guaranteed 2HKO
04
Medicham-Mega
FightingPsychic
OFFENSIVE CHECK
View matchup
542.136
72.1%
Standard error 1.93 points
▾
252+ Atk Pure Power Medicham-Mega Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 656-772 (171.7 - 202%) -- guaranteed OHKO
05
Dragonite
DragonFlying
OFFENSIVE CHECK
View matchup
147.687
78.0%
Standard error 3.41 points
▾
252+ Atk Dragonite Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 404-476 (105.7 - 124.6%) -- guaranteed OHKO
06
Greninja
WaterDark
OFFENSIVE CHECK
View matchup
439.758
72.8%
Standard error 2.12 points
▾
252+ SpA Choice Specs Greninja Ice Beam vs. 252 HP / 252+ SpD Landorus-Therian: 456-540 (119.3 - 141.3%) -- guaranteed OHKO
07
Skarmory
SteelFlying
DEFENSIVE CHECK
View matchup
207.066
75.8%
Standard error 2.98 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Skarmory: 92-108 (27.5 - 32.3%) -- guaranteed 4HKO
08
Hawlucha
FightingFlying
OFFENSIVE CHECK
View matchup
119.767
78.7%
Standard error 3.74 points
▾
252+ Atk Hawlucha Stone Edge vs. 252 HP / 0 Def Landorus-Therian: 103-122 (26.9 - 31.9%) -- guaranteed 4HKO
09
Serperior
Grass
DEFENSIVE CHECK
View matchup
109.635
78.9%
Standard error 3.90 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Serperior: 241-284 (68 - 80.2%) -- guaranteed 2HKO after Leftovers recovery
10
Pinsir-Mega
BugFlying
OFFENSIVE CHECK
View matchup
80.517
76.1%
Standard error 4.75 points
▾
252+ Atk Aerilate Pinsir-Mega Frustration vs. 252 HP / 0 Def Landorus-Therian: 273-322 (71.4 - 84.2%) -- guaranteed 2HKO
11
Keldeo
WaterFighting
OFFENSIVE CHECK
View matchup
39.72
81.4%
Standard error 6.18 points
▾
252+ SpA Keldeo Hydro Pump vs. 252 HP / 252+ SpD Landorus-Therian: 326-386 (85.3 - 101%) -- 6.3% chance to OHKO
12
Kartana
GrassSteel
OFFENSIVE CHECK
View matchup
344.195
64.5%
Standard error 2.58 points
▾
252+ Atk Kartana Giga Impact vs. 252 HP / 0 Def Landorus-Therian: 252-297 (65.9 - 77.7%) -- guaranteed 2HKO
13
Tapu Fini
WaterFairy
DEFENSIVE CHECK
View matchup
150.193
68.6%
Standard error 3.79 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Tapu Fini: 212-250 (61.6 - 72.6%) -- guaranteed 2HKO after Leftovers recovery
14
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
150.984
66.9%
Standard error 3.83 points
▾
252+ SpA Charizard-Mega-Y Fire Blast vs. 252 HP / 252+ SpD Landorus-Therian in Sun: 288-339 (75.3 - 88.7%) -- guaranteed 2HKO
15
Slowbro
WaterPsychic
DEFENSIVE CHECK
View matchup
49.217
74.4%
Standard error 6.22 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Slowbro: 219-258 (55.5 - 65.4%) -- guaranteed 2HKO
16
Gliscor
GroundFlying
DEFENSIVE CHECK
View matchup
326.969
60.3%
Standard error 2.71 points
▾
0- SpA Landorus-Therian Hidden Power Ice vs. 252 HP / 0 SpD Gliscor: 204-244 (57.6 - 68.9%) -- guaranteed 2HKO
17
Cresselia
Psychic
DEFENSIVE CHECK
View matchup
99.15
67.8%
Standard error 4.69 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Cresselia: 206-243 (46.3 - 54.7%) -- 9.8% chance to 2HKO after Leftovers recovery
18
Zapdos
ElectricFlying
OFFENSIVE CHECK
View matchup
166.369
62.3%
Standard error 3.76 points
▾
252+ SpA Zapdos Hidden Power Ice vs. 252 HP / 252+ SpD Landorus-Therian: 232-276 (60.7 - 72.2%) -- guaranteed 2HKO
19
Rotom-Wash
ElectricWater
OFFENSIVE CHECK
View matchup
121.281
61.8%
Standard error 4.41 points
▾
252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Landorus-Therian: 284-336 (74.3 - 87.9%) -- guaranteed 2HKO
20
Tornadus-Therian
Flying
SOFT CHECK
View matchup
309.566
54.6%
Standard error 2.83 points
▾
252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Landorus-Therian: 145-172 (37.9 - 45%) -- guaranteed 3HKO
21
Tapu Bulu
GrassFairy
OFFENSIVE CHECK
View matchup
147.246
59.1%
Standard error 4.05 points
▾
252+ Atk Tapu Bulu Wood Hammer vs. 252 HP / 0 Def Landorus-Therian in Grassy Terrain: 352-415 (92.1 - 108.6%) -- 50% chance to OHKO
22
Celesteela
SteelFlying
DEFENSIVE CHECK
View matchup
136.848
58.4%
Standard error 4.21 points
▾
252+ Atk Landorus-Therian Explosion vs. 252 HP / 252+ Def Celesteela: 114-134 (28.6 - 33.6%) -- 98.6% chance to 4HKO after Leftovers recovery
23
Sableye-Mega
DarkGhost
DEFENSIVE CHECK
View matchup
54.443
65.5%
Standard error 6.44 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 252+ Def Sableye-Mega: 120-142 (39.4 - 46.7%) -- guaranteed 3HKO
24
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
93.061
59.7%
Standard error 5.08 points
▾
252+ SpA Choice Specs Tapu Lele Psyshock vs. 252 HP / 0 Def Landorus-Therian in Psychic Terrain: 352-415 (92.1 - 108.6%) -- 50% chance to OHKO
25
Scizor-Mega
BugSteel
OFFENSIVE CHECK
View matchup
125.965
56.8%
Standard error 4.41 points
▾
252+ Atk Scizor-Mega Double-Edge vs. 252 HP / 0 Def Landorus-Therian: 175-206 (45.8 - 53.9%) -- 46.9% chance to 2HKO
26
Weavile
DarkIce
OFFENSIVE CHECK
View matchup
47.42
65.8%
Standard error 6.89 points
▾
252+ Atk Choice Band Weavile Icicle Crash vs. 252 HP / 0 Def Landorus-Therian: 948-1116 (248.1 - 292.1%) -- guaranteed OHKO
27
Clefable
Fairy
SOFT CHECK
View matchup
216.797
51.4%
Standard error 3.39 points
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Landorus-Therian: 115-136 (30.1 - 35.6%) -- 32.5% chance to 3HKO
28
Lopunny-Mega
NormalFighting
SOFT CHECK
View matchup
132.779
54.0%
Standard error 4.33 points
▾
252+ Atk Lopunny-Mega Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 408-484 (106.8 - 126.7%) -- guaranteed OHKO
29
Gyarados-Mega
WaterDark
OFFENSIVE CHECK
View matchup
21.348
74.3%
Standard error 9.45 points
▾
252+ Atk Gyarados-Mega Ice Fang vs. 252 HP / 0 Def Landorus-Therian: 388-460 (101.5 - 120.4%) -- guaranteed OHKO
30
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
View matchup
108.176
55.3%
Standard error 4.78 points
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Landorus-Therian: 306-361 (80.1 - 94.5%) -- guaranteed 2HKO
Ranked #1 with 46.92% usage. Sorted by conservative score.