Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Dondozo
Water
DEFENSIVE COUNTER
250.752
72.2%
dies 4.68%
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 252+ Def Dondozo: 160-189 (31.7 - 37.5%) -- 87.5% chance to 3HKO
02
Skarmory
SteelFlying
DEFENSIVE COUNTER
57.259
67.5%
dies 8.58%
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 252+ Def Skarmory: 69-82 (20.6 - 24.5%) -- guaranteed 5HKO
03
Garganacl
Rock
DEFENSIVE COUNTER
85.689
65.9%
dies 8.60%
▾
252+ Atk Arceus Earthquake vs. 252 HP / 252+ Def Garganacl: 136-162 (33.6 - 40%) -- guaranteed 3HKO
04
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
1,657.795
57.9%
dies 2.06%
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 0 Def Arceus: 408-482 (91.8 - 108.5%) -- 50% chance to OHKO
05
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
548.722
55.1%
dies 3.65%
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 252+ Def Calyrex-Ice: 132-156 (32.6 - 38.6%) -- 98.6% chance to 3HKO
06
Kingambit
DarkSteel
SOFT CHECK
507.442
54.5%
dies 3.65%
▾
252+ Atk Kingambit Low Kick (120 BP) vs. 252 HP / 0 Def Arceus: 252-298 (56.7 - 67.1%) -- guaranteed 2HKO
07
Skeledirge
FireGhost
SOFT CHECK
335.74
53.9%
dies 4.56%
▾
252+ SpA Skeledirge Torch Song vs. 252 HP / 252+ SpD Arceus: 82-97 (18.4 - 21.8%) -- possible 5HKO
08
Arceus-Water
Water
SOFT CHECK
373.835
51.6%
dies 4.37%
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Arceus: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
09
Arceus-Dark
Dark
SOFT CHECK
24.992
51.4%
dies 10.00%
▾
252+ SpA Dread Plate Arceus-Dark Judgment vs. 252 HP / 252+ SpD Arceus: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
10
Mewtwo
Psychic
SOFT CHECK
41.867
51.2%
dies 10.54%
▾
252+ SpA Life Orb Mewtwo Psystrike vs. 252 HP / 0 Def Arceus: 227-269 (51.1 - 60.5%) -- guaranteed 2HKO
11
Arceus-Ghost
Ghost
SOFT CHECK
389.421
50.2%
dies 4.25%
▾
252+ SpA Arceus-Ghost Focus Blast vs. 252 HP / 252+ SpD Arceus: 172-204 (38.7 - 45.9%) -- guaranteed 3HKO
12
Ursaluna
GroundNormal
SOFT CHECK
91.447
49.3%
dies 8.86%
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Arceus: 195-229 (43.9 - 51.5%) -- 8.6% chance to 2HKO
13
Koraidon
FightingDragon
SOFT CHECK
3,404.865
48.2%
dies 1.45%
▾
252+ Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 252 HP / 0 Def Arceus: 506-596 (113.9 - 134.2%) -- guaranteed OHKO
14
1,108.419
48.1%
dies 2.53%
▾
252+ Atk Silk Scarf Arceus Double-Edge vs. 252 HP / 0 Def Arceus: 210-247 (47.2 - 55.6%) -- 76.2% chance to 2HKO
15
Arceus-Fairy
Fairy
SOFT CHECK
530.815
44.8%
dies 3.67%
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Arceus: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
16
Arceus-Electric
Electric
SOFT CHECK
90.143
43.3%
dies 7.30%
▾
252+ SpA Zap Plate Arceus-Electric Judgment vs. 252 HP / 252+ SpD Arceus: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
17
Tyranitar
RockDark
SOFT CHECK
66.721
42.5%
dies 6.05%
▾
252+ Atk Tyranitar Stone Edge vs. 252 HP / 0 Def Arceus: 157-186 (35.3 - 41.8%) -- guaranteed 3HKO after sandstorm damage
18
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
1,360.255
40.3%
dies 2.26%
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
19
218.522
40.3%
dies 5.51%
▾
Ditto vs. Arceus: 0-0 (0 - 0%)
20
Deoxys-Attack
Psychic
SOFT CHECK
255.895
39.0%
dies 5.27%
▾
0- Atk Deoxys-Attack Low Kick (120 BP) vs. 252 HP / 0 Def Arceus: 224-264 (50.4 - 59.4%) -- guaranteed 2HKO
21
Arceus-Ground
Ground
SOFT CHECK
526.695
38.2%
dies 3.55%
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Arceus: 174-205 (39.1 - 46.1%) -- guaranteed 3HKO
22
Terapagos
Normal
SOFT CHECK
213.022
37.4%
dies 5.50%
▾
0- SpA Terapagos Tera Starstorm vs. 252 HP / 252+ SpD Arceus: 52-63 (11.7 - 14.1%) -- possible 8HKO
23
Ho-Oh
FireFlying
SOFT CHECK
1,365.119
37.3%
dies 2.21%
▾
252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Arceus: 184-217 (41.4 - 48.8%) -- guaranteed 3HKO
24
Groudon
Ground
SOFT CHECK
296.967
36.6%
dies 4.69%
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Arceus: 204-241 (45.9 - 54.2%) -- 54.3% chance to 2HKO
25
Eternatus
PoisonDragon
SOFT CHECK
743.48
36.4%
dies 2.94%
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Arceus: 148-175 (33.3 - 39.4%) -- guaranteed 3HKO
26
1,385.523
35.1%
dies 2.18%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Arceus in Rain: 427-504 (96.1 - 113.5%) -- 75% chance to OHKO
27
Glimmora
RockPoison
SOFT CHECK
269.376
35.0%
dies 4.71%
▾
0- SpA Glimmora Sludge Bomb vs. 252 HP / 252+ SpD Arceus: 70-84 (15.7 - 18.9%) -- possible 6HKO
28
Lunala
PsychicGhost
SOFT CHECK
1,663.08
34.0%
dies 1.96%
▾
252+ SpA Lunala Focus Blast vs. 252 HP / 252+ SpD Arceus: 192-226 (43.2 - 50.9%) -- 3.1% chance to 2HKO
29
Flutter Mane
GhostFairy
SOFT CHECK
270.867
33.6%
dies 4.89%
▾
252+ SpA Choice Specs Flutter Mane Moonblast vs. 252 HP / 252+ SpD Arceus: 168-198 (37.8 - 44.5%) -- guaranteed 3HKO
30
Giratina-Origin
GhostDragon
SOFT CHECK
416.72
32.8%
dies 3.97%
▾
0- SpA Griseous Core Giratina-Origin Draco Meteor vs. 252 HP / 252+ SpD Arceus: 112-133 (25.2 - 29.9%) -- guaranteed 4HKO
Ranked #7 with 28.69% usage. Sorted by reliability score.