Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Skarmory
SteelFlying
DEFENSIVE COUNTER
24.825
91.7%
dies 5.54%
▾
0- SpA Iron Treads Volt Switch vs. 252 HP / 0 SpD Skarmory: 94-112 (28.1 - 33.5%) -- 0.1% chance to 3HKO
02
Arceus-Water
Water
DEFENSIVE COUNTER
30.019
90.7%
dies 5.31%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Arceus-Water: 103-123 (23.1 - 27.7%) -- 73.7% chance to 4HKO
03
Arceus-Ground
Ground
DEFENSIVE COUNTER
472.999
88.9%
dies 2.49%
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Arceus-Ground: 112-132 (25.2 - 29.7%) -- guaranteed 4HKO
04
Corviknight
FlyingSteel
DEFENSIVE COUNTER
334.989
85.1%
dies 3.16%
▾
0- SpA Iron Treads Volt Switch vs. 252 HP / 0 SpD Corviknight: 80-96 (20 - 24%) -- possible 6HKO
05
Kyogre
Water
DEFENSIVE COUNTER
172.154
83.9%
dies 4.73%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Kyogre: 126-148 (31.1 - 36.6%) -- 72.5% chance to 3HKO
06
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
167.983
83.9%
dies 4.87%
▾
252+ Atk Iron Treads Iron Head vs. 252 HP / 252+ Def Calyrex-Ice: 140-168 (34.6 - 41.5%) -- guaranteed 3HKO
07
Dondozo
Water
DEFENSIVE COUNTER
81.516
83.9%
dies 5.67%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Dondozo: 106-126 (21 - 25%) -- possible 5HKO
08
Koraidon
FightingDragon
OFFENSIVE CHECK
892.189
79.5%
dies 2.32%
▾
252+ Atk Orichalcum Pulse Koraidon Collision Course (133.3251953125 BP) vs. 252 HP / 0 Def Iron Treads: 560-660 (145.8 - 171.8%) -- guaranteed OHKO
09
Ursaluna
GroundNormal
OFFENSIVE CHECK
24.901
78.9%
dies 8.17%
▾
252+ Atk Ursaluna Headlong Rush vs. 252 HP / 0 Def Iron Treads: 390-458 (101.5 - 119.2%) -- guaranteed OHKO
10
Chien-Pao
DarkIce
OFFENSIVE CHECK
45.124
78.9%
dies 8.57%
▾
252+ Atk Sword of Ruin Chien-Pao Sacred Sword vs. 252 HP / 0 Def Iron Treads: 232-274 (60.4 - 71.3%) -- guaranteed 2HKO after Leftovers recovery
11
Kyurem-Black
DragonIce
OFFENSIVE CHECK
47.594
76.5%
dies 8.53%
▾
252+ Atk Kyurem-Black Icicle Spear (3 hits) vs. 252 HP / 0 Def Iron Treads: 144-171 (37.5 - 44.5%) -- guaranteed 3HKO after Leftovers recovery
12
Giratina-Origin
GhostDragon
DEFENSIVE COUNTER
24.536
75.6%
dies 8.67%
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Giratina-Origin: 124-148 (24.6 - 29.3%) -- 99.9% chance to 4HKO
13
Ting-Lu
DarkGround
DEFENSIVE COUNTER
307.628
75.2%
dies 4.25%
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Ting-Lu: 108-128 (21 - 24.9%) -- possible 6HKO
14
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
20.736
71.6%
dies 9.90%
▾
252+ Atk Necrozma-Dusk-Mane Earthquake vs. 252 HP / 0 Def Iron Treads: 238-280 (61.9 - 72.9%) -- guaranteed 2HKO after Leftovers recovery
15
Arceus
Normal
DEFENSIVE COUNTER
479.436
67.7%
dies 3.68%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Arceus: 103-123 (23.1 - 27.7%) -- 73.7% chance to 4HKO
16
Gliscor
GroundFlying
DEFENSIVE COUNTER
361.215
64.1%
dies 4.31%
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 252+ Def Gliscor: 216-256 (61 - 72.3%) -- guaranteed 2HKO
17
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
208.956
63.4%
dies 5.72%
▾
+1 252+ Atk Zacian-Crowned Close Combat vs. 252 HP / 0 Def Iron Treads: 408-482 (106.2 - 125.5%) -- guaranteed OHKO
18
Terapagos
Normal
DEFENSIVE COUNTER
34.693
60.6%
dies 8.30%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Terapagos: 130-154 (33.8 - 40.1%) -- guaranteed 3HKO
19
Calyrex-Shadow
PsychicGhost
OFFENSIVE CHECK
1,208.884
60.1%
dies 2.42%
▾
252+ SpA Calyrex-Shadow Astral Barrage vs. 252 HP / 252+ SpD Iron Treads: 232-274 (60.4 - 71.3%) -- guaranteed 2HKO after Leftovers recovery
20
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
182.708
59.7%
dies 6.13%
▾
252+ Atk Iron Treads Iron Head vs. 252 HP / 252+ Def Arceus-Fairy: 168-198 (37.8 - 44.5%) -- guaranteed 3HKO
21
Ho-Oh
FireFlying
DEFENSIVE COUNTER
716.891
59.2%
dies 3.16%
▾
252+ Atk Iron Treads Knock Off (97.5 BP) vs. 252 HP / 252+ Def Ho-Oh: 81-96 (19.4 - 23%) -- possible 5HKO
22
Skeledirge
FireGhost
DEFENSIVE COUNTER
106.823
57.8%
dies 8.15%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 252+ Def Skeledirge: 234-276 (56.7 - 66.9%) -- guaranteed 2HKO
23
Kingambit
DarkSteel
SOFT CHECK
23.268
53.8%
dies 10.34%
▾
252+ Atk Kingambit Low Kick (120 BP) vs. 252 HP / 0 Def Iron Treads: 252-298 (65.6 - 77.6%) -- guaranteed 2HKO after Leftovers recovery
24
Drifblim
GhostFlying
SOFT CHECK
23.261
51.2%
dies 10.36%
▾
252+ SpA Drifblim Shadow Ball vs. 252 HP / 252+ SpD Iron Treads: 102-120 (26.5 - 31.2%) -- 10.1% chance to 4HKO after Leftovers recovery
25
Iron Treads
GroundSteel
SOFT CHECK
242.984
49.3%
dies 5.47%
▾
252+ Atk Iron Treads Earthquake vs. 252 HP / 0 Def Iron Treads: 278-330 (72.3 - 85.9%) -- guaranteed 2HKO after Leftovers recovery
26
Smeargle
Normal
SOFT CHECK
481.434
48.0%
dies 3.82%
▾
27
315.917
44.0%
dies 4.82%
▾
Ditto vs. Iron Treads: 0-0 (0 - 0%)
28
Flutter Mane
GhostFairy
SOFT CHECK
236.556
39.3%
dies 5.37%
▾
252+ SpA Flutter Mane Mystical Fire vs. 252 HP / 252+ SpD Iron Treads: 168-198 (43.7 - 51.5%) -- guaranteed 3HKO after Leftovers recovery
29
Lapras
WaterIce
SOFT CHECK
71.934
36.9%
dies 8.00%
▾
30
Eternatus
PoisonDragon
SOFT CHECK
230.755
35.9%
dies 5.30%
▾
252+ SpA Eternatus Flamethrower vs. 252 HP / 252+ SpD Iron Treads: 212-250 (55.2 - 65.1%) -- guaranteed 2HKO after Leftovers recovery
Ranked #13 with 11.44% usage. Sorted by reliability score.