Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
324.298
71.9%
dies 4.28%
▾
252+ Atk Arceus-Ground Stone Edge vs. 252 HP / 252+ Def Calyrex-Ice: 124-146 (30.6 - 36.1%) -- 47.7% chance to 3HKO
02
Dondozo
Water
DEFENSIVE COUNTER
118.09
67.4%
dies 5.98%
▾
0- SpA Earth Plate Arceus-Ground Judgment vs. 252 HP / 0 SpD Dondozo: 193-228 (38.2 - 45.2%) -- guaranteed 3HKO
03
Arceus-Water
Water
DEFENSIVE COUNTER
231.8
62.8%
dies 5.43%
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 252+ Def Arceus-Water: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
04
Kyurem-Black
DragonIce
OFFENSIVE CHECK
28.751
62.7%
dies 9.02%
▾
252+ Atk Kyurem-Black Icicle Spear (3 hits) vs. 252 HP / 0 Def Arceus-Ground: 288-342 (64.8 - 77%) -- guaranteed 2HKO
05
Arceus
Normal
DEFENSIVE COUNTER
526.695
59.2%
dies 3.58%
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 252+ Def Arceus: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
06
Kyogre
Water
DEFENSIVE COUNTER
875.453
58.8%
dies 2.81%
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 252+ Def Kyogre: 157-186 (38.8 - 46%) -- guaranteed 3HKO
07
Giratina-Origin
GhostDragon
DEFENSIVE COUNTER
217.296
57.6%
dies 5.75%
▾
0- SpA Arceus-Ground Ice Beam vs. 252 HP / 0 SpD Giratina-Origin: 136-162 (26.9 - 32.1%) -- guaranteed 4HKO
08
Rayquaza
DragonFlying
OFFENSIVE CHECK
26.989
55.5%
dies 9.57%
▾
252+ Atk Rayquaza Dragon Ascent vs. 252 HP / 0 Def Arceus-Ground: 204-241 (45.9 - 54.2%) -- 54.3% chance to 2HKO
09
Koraidon
FightingDragon
SOFT CHECK
1,460.955
50.8%
dies 2.22%
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Arceus-Ground in Sun: 253-298 (56.9 - 67.1%) -- guaranteed 2HKO
10
Arceus-Ground
Ground
SOFT CHECK
225.347
49.6%
dies 5.59%
▾
252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Arceus-Ground: 174-205 (39.1 - 46.1%) -- guaranteed 3HKO
11
Kingambit
DarkSteel
SOFT CHECK
219.595
47.2%
dies 5.64%
▾
252+ Atk Kingambit Kowtow Cleave vs. 252 HP / 0 Def Arceus-Ground: 135-159 (30.4 - 35.8%) -- 34.1% chance to 3HKO
12
71.325
46.0%
dies 8.22%
▾
Ditto vs. Arceus-Ground: 0-0 (0 - 0%)
13
Arceus-Ghost
Ghost
SOFT CHECK
132.068
44.2%
dies 7.17%
▾
252+ SpA Spooky Plate Arceus-Ghost Judgment vs. 252 HP / 252+ SpD Arceus-Ground: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
14
Deoxys-Attack
Psychic
SOFT CHECK
104.728
42.0%
dies 8.23%
▾
252+ SpA Deoxys-Attack Psycho Boost vs. 252 HP / 252+ SpD Arceus-Ground: 204-241 (45.9 - 54.2%) -- 54.3% chance to 2HKO
15
Lunala
PsychicGhost
SOFT CHECK
515.927
40.8%
dies 3.64%
▾
252+ SpA Lunala Psyshock vs. 252 HP / 0 Def Arceus-Ground: 127-151 (28.6 - 34%) -- 0.9% chance to 3HKO
16
Gliscor
GroundFlying
SOFT CHECK
305.437
38.2%
dies 4.43%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Arceus-Ground: 124-147 (27.9 - 33.1%) -- guaranteed 4HKO
17
Skarmory
SteelFlying
SOFT CHECK
21.056
37.2%
dies 10.53%
▾
252+ Atk Skarmory Brave Bird vs. 252 HP / 0 Def Arceus-Ground: 133-157 (29.9 - 35.3%) -- 21.5% chance to 3HKO
18
Arceus-Fairy
Fairy
SOFT CHECK
291.936
36.6%
dies 4.80%
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Arceus-Ground: 129-153 (29 - 34.4%) -- 3.1% chance to 3HKO
19
Terapagos
Normal
SOFT CHECK
110.835
35.1%
dies 7.73%
▾
0- SpA Terapagos Ice Beam vs. 252 HP / 252+ SpD Arceus-Ground: 54-64 (12.1 - 14.4%) -- possible 7HKO
20
Ting-Lu
DarkGround
SOFT CHECK
126.651
34.8%
dies 6.78%
▾
252+ Atk Ting-Lu Earthquake vs. 252 HP / 0 Def Arceus-Ground: 136-162 (30.6 - 36.4%) -- 58.2% chance to 3HKO
21
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
539.621
34.0%
dies 3.48%
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Arceus-Ground: 123-145 (27.7 - 32.6%) -- guaranteed 4HKO
22
Blissey
Normal
SOFT CHECK
193.91
32.9%
dies 5.38%
▾
Blissey Seismic Toss vs. 252 HP Arceus-Ground: 100-100 (22.5 - 22.5%) -- guaranteed 5HKO
23
Zacian-Crowned
FairySteel
SOFT CHECK
654.77
32.8%
dies 3.13%
▾
+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Arceus-Ground: 229-271 (51.5 - 61%) -- guaranteed 2HKO
24
Groudon
Ground
SOFT CHECK
181.509
32.3%
dies 5.93%
▾
252+ Atk Groudon Precipice Blades vs. 252 HP / 0 Def Arceus-Ground: 204-241 (45.9 - 54.2%) -- 54.3% chance to 2HKO
25
Flutter Mane
GhostFairy
SOFT CHECK
89.644
28.4%
dies 6.71%
▾
252+ SpA Choice Specs Flutter Mane Moonblast vs. 252 HP / 252+ SpD Arceus-Ground: 168-198 (37.8 - 44.5%) -- guaranteed 3HKO
26
Ho-Oh
FireFlying
SOFT CHECK
783.23
26.2%
dies 2.62%
▾
252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Arceus-Ground: 184-217 (41.4 - 48.8%) -- guaranteed 3HKO
27
Eternatus
PoisonDragon
SOFT CHECK
369.537
23.6%
dies 3.74%
▾
252+ SpA Eternatus Dynamax Cannon vs. 252 HP / 252+ SpD Arceus-Ground: 124-147 (27.9 - 33.1%) -- guaranteed 4HKO
28
Arceus-Electric
Electric
SOFT CHECK
73.121
21.8%
dies 6.66%
▾
252+ SpA Arceus-Electric Ice Beam vs. 252 HP / 252+ SpD Arceus-Ground: 130-154 (29.2 - 34.6%) -- 7.5% chance to 3HKO
29
Landorus-Therian
GroundFlying
SOFT CHECK
297.177
20.7%
dies 4.00%
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Arceus-Ground: 166-196 (37.3 - 44.1%) -- guaranteed 3HKO
30
Ribombee
BugFairy
SOFT CHECK
159.955
20.7%
dies 5.24%
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus-Ground: 88-105 (19.8 - 23.6%) -- possible 5HKO
Ranked #12 with 13.52% usage. Sorted by reliability score.