Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Kyurem-Black
DragonIce
OFFENSIVE CHECK
20.066
97.4%
dies 3.52%
▾
252+ Atk Kyurem-Black Dragon Claw vs. 252 HP / 0 Def Blissey: 739-870 (103.5 - 121.8%) -- guaranteed OHKO
02
Kingambit
DarkSteel
DEFENSIVE COUNTER
118.178
90.6%
dies 4.55%
▾
Blissey Seismic Toss vs. 252 HP Kingambit: 100-100 (24.7 - 24.7%) -- guaranteed 5HKO
03
Rayquaza
DragonFlying
OFFENSIVE CHECK
23.687
90.4%
dies 6.06%
▾
252+ Atk Rayquaza Dragon Ascent vs. 252 HP / 0 Def Blissey: 1006-1185 (140.8 - 165.9%) -- guaranteed OHKO
04
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
471.633
88.8%
dies 2.43%
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Blissey: 603-711 (84.4 - 99.5%) -- guaranteed 2HKO
05
Arceus
Normal
DEFENSIVE COUNTER
169.865
83.4%
dies 4.36%
▾
Blissey Seismic Toss vs. 252 HP Arceus: 100-100 (22.5 - 22.5%) -- guaranteed 5HKO
06
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
162.595
82.8%
dies 5.00%
▾
Blissey Seismic Toss vs. 252 HP Calyrex-Ice: 100-100 (24.7 - 24.7%) -- guaranteed 5HKO
07
Koraidon
FightingDragon
OFFENSIVE CHECK
1,315.165
80.2%
dies 1.85%
▾
252+ Atk Orichalcum Pulse Koraidon Close Combat vs. 252 HP / 0 Def Blissey: 2480-2922 (347.3 - 409.2%) -- guaranteed OHKO
08
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
341.677
79.7%
dies 3.67%
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 0 Def Blissey: 2012-2368 (281.7 - 331.6%) -- guaranteed OHKO
09
Tyranitar
RockDark
OFFENSIVE CHECK
38.856
79.0%
dies 6.53%
▾
252+ Atk Tyranitar Stone Edge vs. 252 HP / 0 Def Blissey: 772-909 (108.1 - 127.3%) -- guaranteed OHKO
10
Ursaluna
GroundNormal
OFFENSIVE CHECK
20.688
78.6%
dies 9.02%
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Blissey: 955-1125 (133.7 - 157.5%) -- guaranteed OHKO
11
Groudon
Ground
DEFENSIVE COUNTER
122.982
77.1%
dies 6.06%
▾
Blissey Seismic Toss vs. 252 HP Groudon: 100-100 (24.7 - 24.7%) -- guaranteed 6HKO after Leftovers recovery
12
Deoxys-Attack
Psychic
OFFENSIVE CHECK
70.826
76.9%
dies 7.08%
▾
0- Atk Deoxys-Attack Low Kick (60 BP) vs. 252 HP / 0 Def Blissey: 546-644 (76.4 - 90.1%) -- guaranteed 2HKO
13
Ting-Lu
DarkGround
DEFENSIVE COUNTER
48.643
74.1%
dies 6.28%
▾
Blissey Seismic Toss vs. 252 HP Ting-Lu: 100-100 (19.4 - 19.4%) -- guaranteed 8HKO after Leftovers recovery
14
Ho-Oh
FireFlying
DEFENSIVE COUNTER
738.158
67.2%
dies 2.84%
▾
Blissey Seismic Toss vs. 252 HP Ho-Oh: 100-100 (24 - 24%) -- guaranteed 5HKO
15
Arceus-Flying
Flying
DEFENSIVE COUNTER
22.03
66.9%
dies 10.02%
▾
Blissey Seismic Toss vs. 252 HP Arceus-Flying: 100-100 (22.5 - 22.5%) -- guaranteed 5HKO
16
Clefable
Fairy
DEFENSIVE COUNTER
23.627
66.1%
dies 9.74%
▾
Blissey Seismic Toss vs. 252 HP Clefable: 100-100 (25.3 - 25.3%) -- guaranteed 4HKO
17
Giratina
GhostDragon
DEFENSIVE COUNTER
27.735
65.8%
dies 9.01%
▾
0- SpA Blissey Shadow Ball vs. 252 HP / 0 SpD Giratina: 70-84 (13.8 - 16.6%) -- possible 6HKO
18
Giratina-Origin
GhostDragon
DEFENSIVE COUNTER
227.683
65.7%
dies 5.35%
▾
0- SpA Blissey Shadow Ball vs. 252 HP / 0 SpD Giratina-Origin: 82-98 (16.2 - 19.4%) -- possible 6HKO
19
Terapagos
Normal
DEFENSIVE COUNTER
97.801
64.8%
dies 6.63%
▾
Blissey Seismic Toss vs. 252 HP Terapagos: 100-100 (26 - 26%) -- guaranteed 4HKO
20
Arceus-Ghost
Ghost
DEFENSIVE COUNTER
216.49
64.7%
dies 5.50%
▾
0- SpA Blissey Shadow Ball vs. 252 HP / 0 SpD Arceus-Ghost: 70-84 (15.7 - 18.9%) -- possible 6HKO
21
Lunala
PsychicGhost
OFFENSIVE CHECK
641.966
61.6%
dies 3.20%
▾
252+ SpA Lunala Psyshock vs. 252 HP / 0 Def Blissey: 628-741 (87.9 - 103.7%) -- 25% chance to OHKO
22
Hatterene
PsychicFairy
OFFENSIVE CHECK
329.679
60.7%
dies 4.50%
▾
252+ SpA Hatterene Dazzling Gleam vs. 252 HP / 252+ SpD Blissey: 87-103 (12.1 - 14.4%) -- possible 7HKO
23
Corviknight
FlyingSteel
DEFENSIVE COUNTER
66.543
57.7%
dies 6.06%
▾
Blissey Seismic Toss vs. 252 HP Corviknight: 100-100 (25 - 25%) -- guaranteed 5HKO after Leftovers recovery
24
Flutter Mane
GhostFairy
OFFENSIVE CHECK
81.981
55.4%
dies 7.75%
▾
252+ SpA Choice Specs Flutter Mane Psyshock vs. 252 HP / 0 Def Blissey: 620-730 (86.8 - 102.2%) -- 18.8% chance to OHKO
25
Arceus-Ground
Ground
DEFENSIVE COUNTER
193.91
55.1%
dies 5.87%
▾
Blissey Seismic Toss vs. 252 HP Arceus-Ground: 100-100 (22.5 - 22.5%) -- guaranteed 5HKO
26
Skeledirge
FireGhost
SOFT CHECK
129.769
52.9%
dies 7.01%
▾
252+ SpA Skeledirge Torch Song vs. 252 HP / 252+ SpD Blissey: 76-90 (10.6 - 12.6%) -- possible 8HKO
27
Landorus-Therian
GroundFlying
SOFT CHECK
198.24
50.8%
dies 5.95%
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Blissey: 817-963 (114.4 - 134.8%) -- guaranteed OHKO
28
21.261
46.1%
dies 10.81%
▾
Ditto vs. Blissey: 0-0 (0 - 0%)
29
Blissey
Normal
SOFT CHECK
92.151
45.8%
dies 7.33%
▾
Blissey Seismic Toss vs. 252 HP Blissey: 100-100 (14 - 14%) -- guaranteed 8HKO
30
Glimmora
RockPoison
SOFT CHECK
182.49
45.8%
dies 5.92%
▾
252+ Atk Glimmora Mortal Spin vs. 252 HP / 0 Def Blissey: 133-157 (18.6 - 21.9%) -- possible 5HKO
Ranked #26 with 6.46% usage. Sorted by reliability score.