Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Mamoswine
IceGround
OFFENSIVE CHECK
35.181
96.5%
dies 3.11%
▾
252+ Atk Mamoswine Heavy Slam (120 BP) vs. 252 HP / 0 Def Flutter Mane: 464-548 (147.7 - 174.5%) -- guaranteed OHKO
02
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
127.708
91.7%
dies 4.02%
▾
+1 252+ Atk Zacian-Crowned Iron Head vs. 252 HP / 0 Def Flutter Mane: 774-912 (246.4 - 290.4%) -- guaranteed OHKO
03
Chien-Pao
DarkIce
OFFENSIVE CHECK
28.305
87.6%
dies 6.19%
▾
252+ Atk Sword of Ruin Chien-Pao Icicle Crash vs. 252 HP / 0 Def Flutter Mane: 312-367 (99.3 - 116.8%) -- 93.8% chance to OHKO
04
Kingambit
DarkSteel
DEFENSIVE COUNTER
26.737
87.4%
dies 6.42%
▾
252+ SpA Flutter Mane Mystical Fire vs. 252 HP / 252+ SpD Kingambit: 148-176 (36.6 - 43.5%) -- guaranteed 3HKO
05
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
77.922
86.5%
dies 5.29%
▾
252+ SpA Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Calyrex-Ice: 180-212 (44.5 - 52.4%) -- 20.7% chance to 2HKO
06
Calyrex-Shadow
PsychicGhost
OFFENSIVE CHECK
474.567
70.4%
dies 3.58%
▾
252+ SpA Calyrex-Shadow Astral Barrage vs. 252 HP / 252+ SpD Flutter Mane: 302-356 (96.1 - 113.3%) -- 75% chance to OHKO
07
Kyurem-Black
DragonIce
OFFENSIVE CHECK
23.832
70.1%
dies 9.38%
▾
252+ Atk Kyurem-Black Iron Head vs. 252 HP / 0 Def Flutter Mane: 378-446 (120.3 - 142%) -- guaranteed OHKO
08
Kyogre
Water
DEFENSIVE COUNTER
68.813
67.3%
dies 7.59%
▾
252+ SpA Flutter Mane Moonblast vs. 252 HP / 252+ SpD Kyogre: 100-118 (24.7 - 29.2%) -- 99.9% chance to 4HKO
09
Arceus-Ground
Ground
DEFENSIVE COUNTER
196.423
64.8%
dies 5.78%
▾
252+ SpA Flutter Mane Moonblast vs. 252 HP / 252+ SpD Arceus-Ground: 111-132 (25 - 29.7%) -- guaranteed 4HKO
10
Ho-Oh
FireFlying
DEFENSIVE COUNTER
349.07
63.4%
dies 4.42%
▾
252+ SpA Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Ho-Oh: 78-93 (18.7 - 22.3%) -- possible 5HKO
11
Clodsire
PoisonGround
DEFENSIVE COUNTER
92.905
60.7%
dies 8.68%
▾
252+ SpA Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Clodsire: 106-126 (22.8 - 27.1%) -- possible 5HKO
12
Arceus
Normal
DEFENSIVE COUNTER
418.459
60.4%
dies 4.10%
▾
252+ SpA Flutter Mane Moonblast vs. 252 HP / 252+ SpD Arceus: 111-132 (25 - 29.7%) -- guaranteed 4HKO
13
Iron Treads
GroundSteel
DEFENSIVE COUNTER
236.556
60.1%
dies 5.38%
▾
252+ SpA Flutter Mane Mystical Fire vs. 252 HP / 252+ SpD Iron Treads: 168-198 (43.7 - 51.5%) -- guaranteed 3HKO after Leftovers recovery
14
Ting-Lu
DarkGround
DEFENSIVE COUNTER
163.921
59.2%
dies 6.24%
▾
252+ SpA Flutter Mane Moonblast vs. 252 HP / 252+ SpD Vessel of Ruin Ting-Lu: 218-260 (42.4 - 50.5%) -- guaranteed 3HKO after Leftovers recovery
15
Glimmora
RockPoison
OFFENSIVE CHECK
160.184
56.7%
dies 6.62%
▾
0- SpA Glimmora Power Gem vs. 252 HP / 252+ SpD Flutter Mane: 58-69 (18.4 - 21.9%) -- possible 5HKO
16
Koraidon
FightingDragon
SOFT CHECK
495.398
54.1%
dies 3.81%
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Flutter Mane in Sun: 476-561 (151.5 - 178.6%) -- guaranteed OHKO
17
Flutter Mane
GhostFairy
SOFT CHECK
233.477
50.0%
dies 5.61%
▾
252+ SpA Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Flutter Mane: 174-206 (55.4 - 65.6%) -- guaranteed 2HKO
18
Grimmsnarl
DarkFairy
SOFT CHECK
130.737
48.3%
dies 7.53%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 0 Def Flutter Mane: 246-291 (78.3 - 92.6%) -- guaranteed 2HKO
19
Ribombee
BugFairy
SOFT CHECK
130.59
45.7%
dies 7.51%
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Flutter Mane: 81-96 (25.7 - 30.5%) -- guaranteed 4HKO
20
Miraidon
ElectricDragon
SOFT CHECK
1,047.411
42.5%
dies 2.54%
▾
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 252+ SpD Flutter Mane in Electric Terrain: 186-220 (59.2 - 70%) -- guaranteed 2HKO
21
Alomomola
Water
SOFT CHECK
36.601
40.8%
dies 8.12%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 0 Def Flutter Mane: 121-144 (38.5 - 45.8%) -- guaranteed 3HKO
22
Hatterene
PsychicFairy
SOFT CHECK
117.936
39.0%
dies 7.71%
▾
252+ SpA Hatterene Psyshock vs. 252 HP / 0 Def Flutter Mane: 240-283 (76.4 - 90.1%) -- guaranteed 2HKO
23
Incineroar
FireDark
SOFT CHECK
49.572
36.8%
dies 9.42%
▾
252+ Atk Incineroar Knock Off (97.5 BP) vs. 252 HP / 0 Def Flutter Mane: 258-304 (82.1 - 96.8%) -- guaranteed 2HKO
24
Eternatus
PoisonDragon
SOFT CHECK
44.693
36.6%
dies 10.18%
▾
252+ SpA Eternatus Sludge Bomb vs. 252 HP / 252+ SpD Flutter Mane: 102-121 (32.4 - 38.5%) -- 98.4% chance to 3HKO
25
Terapagos
Normal
SOFT CHECK
21.564
33.7%
dies 10.18%
▾
0- SpA Terapagos Earth Power vs. 252 HP / 252+ SpD Flutter Mane: 24-29 (7.6 - 9.2%)
26
Arceus-Fairy
Fairy
SOFT CHECK
22.298
27.8%
dies 9.49%
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Flutter Mane: 118-141 (37.5 - 44.9%) -- guaranteed 3HKO
27
Smeargle
Normal
SOFT CHECK
348.993
27.0%
dies 3.99%
▾
252+ Atk Smeargle Nuzzle vs. 252 HP / 0 Def Flutter Mane: 16-19 (5 - 6%)
28
Deoxys-Speed
Psychic
SOFT CHECK
126.406
24.8%
dies 5.27%
▾
252+ SpA Deoxys-Speed Psycho Boost vs. 252 HP / 252+ SpD Flutter Mane: 118-141 (37.5 - 44.9%) -- guaranteed 3HKO
29
Whimsicott
GrassFairy
SOFT CHECK
27.461
19.3%
dies 7.53%
30
128.902
18.8%
dies 5.67%
▾
Ditto vs. Flutter Mane: 0-0 (0 - 0%)
Ranked #17 with 9.24% usage. Sorted by reliability score.