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
Dondozo
Water
DEFENSIVE CHECK
View matchup
396.503
83.6%
Standard error 1.86 points
▾
252+ Atk Zacian-Crowned Wild Charge vs. 252 HP / 252+ Def Unaware Dondozo: 158-186 (31.3 - 36.9%) -- guaranteed 4HKO after Leftovers recovery
02
Ditto
Normal
DEFENSIVE CHECK
View matchup
271.995
70.1%
Standard error 2.78 points
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 252+ Def Ditto: 528-622 (176 - 207.3%) -- guaranteed OHKO
03
Pheromosa
BugFighting
OFFENSIVE CHECK
View matchup
130.817
74.0%
Standard error 3.84 points
▾
252+ Atk Choice Band Pheromosa High Jump Kick vs. 252 HP / 0 Def Zacian-Crowned: 322-381 (82.9 - 98.1%) -- guaranteed 2HKO
04
Melmetal
Steel
DEFENSIVE CHECK
View matchup
92.314
73.3%
Standard error 4.60 points
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 252+ Def Melmetal: 268-316 (56.5 - 66.6%) -- guaranteed 2HKO
05
Groudon-Primal
GroundFire
OFFENSIVE CHECK
View matchup
1,551.125
58.8%
Standard error 1.25 points
▾
252+ Atk Groudon-Primal Precipice Blades vs. 252 HP / 0 Def Zacian-Crowned: 488-576 (125.7 - 148.4%) -- guaranteed OHKO
06
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
View matchup
478.63
56.0%
Standard error 2.27 points
▾
0- Atk Necrozma-Dusk-Mane Earthquake vs. 252 HP / 0 Def Zacian-Crowned: 170-202 (43.8 - 52%) -- 11.7% chance to 2HKO
07
Zygarde
DragonGround
SOFT CHECK
View matchup
567.068
54.1%
Standard error 2.09 points
▾
252+ Atk Zygarde Thousand Arrows vs. 252 HP / 0 Def Zacian-Crowned: 240-284 (61.8 - 73.1%) -- guaranteed 2HKO
08
Marshadow
FightingGhost
SOFT CHECK
View matchup
522.92
53.5%
Standard error 2.18 points
▾
+1 252+ Atk Marshadow Spectral Thief vs. 252 HP / 0 Def Zacian-Crowned: 210-247 (54.1 - 63.6%) -- guaranteed 2HKO
09
Calyrex-Ice
PsychicIce
DEFENSIVE CHECK
View matchup
101.216
63.3%
Standard error 4.79 points
▾
+1 252+ Atk Zacian-Crowned Iron Head vs. 252 HP / 252+ Def Calyrex-Ice: 258-306 (63.8 - 75.7%) -- guaranteed 2HKO
10
Zacian-Crowned
FairySteel
SOFT CHECK
View matchup
567.777
49.9%
Standard error 2.10 points
▾
+1 252+ Atk Zacian-Crowned Iron Head vs. 252 HP / 0 Def Zacian-Crowned: 211-250 (54.3 - 64.4%) -- guaranteed 2HKO
11
Deoxys-Attack
Psychic
OFFENSIVE CHECK
View matchup
150.642
57.3%
Standard error 4.03 points
▾
0- Atk Life Orb Deoxys-Attack Low Kick (120 BP) vs. 252 HP / 0 Def Zacian-Crowned: 149-177 (38.4 - 45.6%) -- guaranteed 3HKO
12
Kyogre
Water
DEFENSIVE CHECK
View matchup
20.887
75.9%
Standard error 9.35 points
▾
+1 252+ Atk Zacian-Crowned Wild Charge vs. 252 HP / 252+ Def Kyogre: 278-328 (68.8 - 81.1%) -- guaranteed 2HKO
13
Gholdengo
SteelGhost
OFFENSIVE CHECK
View matchup
62.845
61.5%
Standard error 6.14 points
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Zacian-Crowned: 144-169 (37.1 - 43.5%) -- guaranteed 3HKO
14
Arceus
Normal
SOFT CHECK
View matchup
415.339
42.3%
Standard error 2.42 points
▾
252+ Atk Life Orb Arceus Earthquake vs. 252 HP / 0 Def Zacian-Crowned: 263-309 (67.7 - 79.6%) -- guaranteed 2HKO
15
Ho-Oh
FireFlying
SOFT CHECK
View matchup
792.056
39.2%
Standard error 1.73 points
▾
252+ Atk Ho-Oh Sacred Fire vs. 252 HP / 0 Def Zacian-Crowned: 320-378 (82.4 - 97.4%) -- guaranteed 2HKO
16
Arceus-Ground
Ground
SOFT CHECK
View matchup
305.879
41.3%
Standard error 2.82 points
▾
252+ SpA Earth Plate Arceus-Ground Judgment vs. 252 HP / 252+ SpD Zacian-Crowned: 266-314 (68.5 - 80.9%) -- guaranteed 2HKO
17
Yveltal
DarkFlying
SOFT CHECK
View matchup
1,174.043
33.4%
Standard error 1.38 points
▾
+1 0- Atk Life Orb Dark Aura Yveltal Foul Play vs. 252 HP / 0 Def Zacian-Crowned: 149-177 (38.4 - 45.6%) -- guaranteed 3HKO
18
Lunala
PsychicGhost
SOFT CHECK
View matchup
197.306
39.6%
Standard error 3.48 points
▾
252+ SpA Lunala Moongeist Beam vs. 252 HP / 252+ SpD Zacian-Crowned: 123-145 (31.7 - 37.3%) -- 88.4% chance to 3HKO
19
Salamence-Mega
DragonFlying
SOFT CHECK
View matchup
130.487
40.7%
Standard error 4.30 points
▾
252+ Atk Salamence-Mega Earthquake vs. 252 HP / 0 Def Zacian-Crowned: 230-272 (59.2 - 70.1%) -- guaranteed 2HKO
20
Landorus-Therian
GroundFlying
SOFT CHECK
View matchup
127.076
39.5%
Standard error 4.34 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Zacian-Crowned: 344-408 (88.6 - 105.1%) -- 31.3% chance to OHKO
21
Kyogre-Primal
Water
SOFT CHECK
View matchup
325.22
30.6%
Standard error 2.56 points
▾
252+ SpA Kyogre-Primal Water Spout (150 BP) vs. 252 HP / 252+ SpD Zacian-Crowned in Heavy Rain: 337-397 (86.8 - 102.3%) -- 18.8% chance to OHKO
22
Kingambit
DarkSteel
SOFT CHECK
View matchup
109.808
38.7%
Standard error 4.65 points
▾
252+ Atk Kingambit Iron Head vs. 252 HP / 0 Def Zacian-Crowned: 132-156 (34 - 40.2%) -- guaranteed 3HKO
23
Eternatus
PoisonDragon
SOFT CHECK
View matchup
485.016
25.6%
Standard error 1.98 points
▾
252+ SpA Eternatus Fire Blast vs. 252 HP / 252+ SpD Zacian-Crowned: 188-222 (48.4 - 57.2%) -- 91.8% chance to 2HKO
24
Mewtwo
Psychic
SOFT CHECK
View matchup
76.088
39.6%
Standard error 5.61 points
▾
252+ SpA Life Orb Mewtwo Earth Power vs. 252 HP / 252+ SpD Zacian-Crowned: 208-247 (53.6 - 63.6%) -- guaranteed 2HKO
25
Lugia
PsychicFlying
SOFT CHECK
View matchup
62.388
38.8%
Standard error 6.17 points
▾
252+ SpA Lugia Aeroblast vs. 252 HP / 252+ SpD Zacian-Crowned: 46-54 (11.8 - 13.9%) -- possible 8HKO
26
Giratina-Origin
GhostDragon
SOFT CHECK
View matchup
296.689
23.9%
Standard error 2.47 points
▾
0- Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Zacian-Crowned: 133-157 (34.2 - 40.4%) -- guaranteed 3HKO
27
Chi-Yu
DarkFire
OFFENSIVE CHECK
View matchup
20.942
55.4%
Standard error 10.86 points
▾
252+ SpA Beads of Ruin Chi-Yu Overheat vs. 252 HP / 252+ SpD Zacian-Crowned: 420-494 (108.2 - 127.3%) -- guaranteed OHKO
28
Chien-Pao
DarkIce
SOFT CHECK
View matchup
195.042
24.1%
Standard error 3.06 points
▾
252+ Atk Sword of Ruin Chien-Pao Sacred Sword vs. 252 HP / 0 Def Zacian-Crowned: 121-143 (31.1 - 36.8%) -- 73.6% chance to 3HKO
29
Mewtwo-Mega-Y
Psychic
SOFT CHECK
View matchup
131.476
22.8%
Standard error 3.66 points
▾
252+ SpA Mewtwo-Mega-Y Fire Blast vs. 252 HP / 252+ SpD Zacian-Crowned: 234-276 (60.3 - 71.1%) -- guaranteed 2HKO
30
Rayquaza
DragonFlying
SOFT CHECK
View matchup
43.669
35.1%
Standard error 7.22 points
▾
252+ Atk Choice Band Rayquaza V-create vs. 252 HP / 0 Def Zacian-Crowned: 636-750 (163.9 - 193.2%) -- guaranteed OHKO
Ranked #2 with 42.99% usage. Sorted by conservative score.