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
37.458
94.7%
dies 3.65%
▾
Blissey Seismic Toss vs. 252 HP Calyrex-Ice: 100-100 (24.7 - 24.7%) -- guaranteed 5HKO
02
Iron Treads
GroundSteel
DEFENSIVE COUNTER
31.768
92.8%
dies 4.58%
▾
Blissey Seismic Toss vs. 252 HP Iron Treads: 100-100 (26 - 26%) -- guaranteed 5HKO after Leftovers recovery
03
Arceus
Normal
DEFENSIVE COUNTER
112.874
80.9%
dies 6.27%
▾
Blissey Seismic Toss vs. 252 HP Arceus: 100-100 (22.5 - 22.5%) -- guaranteed 5HKO
04
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
39.988
77.8%
dies 6.58%
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 0 Def Blissey: 2012-2368 (281.7 - 331.6%) -- guaranteed OHKO
05
Smeargle
Normal
DEFENSIVE COUNTER
24.155
75.8%
dies 8.72%
▾
Blissey Seismic Toss vs. 252 HP Smeargle: 100-100 (31.8 - 31.8%) -- guaranteed 4HKO
06
Corviknight
FlyingSteel
DEFENSIVE COUNTER
21.897
74.0%
dies 9.37%
▾
Blissey Seismic Toss vs. 252 HP Corviknight: 100-100 (25 - 25%) -- guaranteed 5HKO after Leftovers recovery
07
Koraidon
FightingDragon
OFFENSIVE CHECK
321.592
71.3%
dies 4.18%
▾
252+ Atk Orichalcum Pulse Koraidon Collision Course (133.3251953125 BP) vs. 252 HP / 0 Def Blissey: 2750-3236 (385.1 - 453.2%) -- guaranteed OHKO
08
Ho-Oh
FireFlying
DEFENSIVE COUNTER
181.349
66.7%
dies 5.75%
▾
Blissey Seismic Toss vs. 252 HP Ho-Oh: 100-100 (24 - 24%) -- guaranteed 5HKO
09
Ting-Lu
DarkGround
DEFENSIVE COUNTER
58.94
64.5%
dies 8.76%
▾
Blissey Seismic Toss vs. 252 HP Ting-Lu: 100-100 (19.4 - 19.4%) -- guaranteed 8HKO after Leftovers recovery
10
Eternatus
PoisonDragon
OFFENSIVE CHECK
41.333
56.1%
dies 7.72%
▾
252+ SpA Eternatus Dynamax Cannon vs. 252 HP / 252+ SpD Blissey: 114-135 (15.9 - 18.9%) -- possible 6HKO
11
Gliscor
GroundFlying
SOFT CHECK
40.997
54.3%
dies 7.78%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Blissey: 607-715 (85 - 100.1%) -- 6.3% chance to OHKO
12
Glimmora
RockPoison
SOFT CHECK
50.949
52.0%
dies 9.80%
▾
252+ Atk Glimmora Mortal Spin vs. 252 HP / 0 Def Blissey: 133-157 (18.6 - 21.9%) -- possible 5HKO
13
Calyrex-Shadow
PsychicGhost
SOFT CHECK
406.225
51.1%
dies 4.01%
▾
252+ SpA Calyrex-Shadow Psyshock vs. 252 HP / 0 Def Blissey: 721-850 (100.9 - 119%) -- guaranteed OHKO
14
Arceus-Ground
Ground
SOFT CHECK
68.452
46.5%
dies 6.03%
▾
0- Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Blissey: 570-672 (79.8 - 94.1%) -- guaranteed 2HKO
15
Hatterene
PsychicFairy
SOFT CHECK
27.112
46.5%
dies 9.58%
▾
252+ SpA Hatterene Psyshock vs. 252 HP / 0 Def Blissey: 625-736 (87.5 - 103%) -- 25% chance to OHKO
16
Alomomola
Water
SOFT CHECK
27.869
40.1%
dies 9.28%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 0 Def Blissey: 313-370 (43.8 - 51.8%) -- 12.5% chance to 2HKO
17
43.968
38.4%
dies 9.93%
▾
Ditto vs. Blissey: 0-0 (0 - 0%)
18
Skeledirge
FireGhost
SOFT CHECK
25.992
37.1%
dies 9.47%
▾
252+ SpA Skeledirge Torch Song vs. 252 HP / 252+ SpD Blissey: 76-90 (10.6 - 12.6%) -- possible 8HKO
19
Arceus-Fairy
Fairy
SOFT CHECK
47.257
34.1%
dies 6.90%
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Blissey: 118-141 (16.5 - 19.7%) -- possible 6HKO
20
Terapagos
Normal
SOFT CHECK
24.429
30.4%
dies 9.30%
▾
252+ Atk Terapagos Rapid Spin vs. 252 HP / 0 Def Blissey: 241-285 (33.7 - 39.9%) -- guaranteed 3HKO
21
Ribombee
BugFairy
SOFT CHECK
32.815
26.6%
dies 7.71%
▾
0- Atk Ribombee Pounce vs. 252 HP / 0 Def Blissey: 127-150 (17.7 - 21%) -- possible 5HKO
22
Giratina
GhostDragon
SOFT CHECK
27.729
24.6%
dies 8.18%
23
162.989
23.2%
dies 5.35%
▾
252+ SpA Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Blissey in Rain: 262-310 (36.6 - 43.4%) -- guaranteed 3HKO
24
Miraidon
ElectricDragon
SOFT CHECK
464.897
18.0%
dies 3.03%
▾
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 252+ SpD Blissey in Electric Terrain: 186-220 (26 - 30.8%) -- guaranteed 4HKO
Ranked #37 with 2.52% usage. Sorted by reliability score.