Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
20.809
93.9%
dies 5.24%
▾
252+ SpA Latios-Mega Mystical Fire vs. 252 HP / 252+ SpD Ferrothorn: 272-324 (77.2 - 92%) -- guaranteed 2HKO after Leftovers recovery
02
Gholdengo
SteelGhost
OFFENSIVE CHECK
221.784
89.2%
dies 3.56%
▾
252+ SpA Gholdengo Focus Blast vs. 252 HP / 252+ SpD Ferrothorn: 192-226 (54.5 - 64.2%) -- guaranteed 2HKO after Leftovers recovery
03
Ursaluna
GroundNormal
OFFENSIVE CHECK
32.71
89.0%
dies 5.47%
▾
252+ Atk Ursaluna Fire Punch vs. 252 HP / 0 Def Ferrothorn: 300-356 (85.2 - 101.1%) -- 12.5% chance to OHKO
04
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
109.669
88.9%
dies 4.16%
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Ferrothorn in Sun: 1056-1248 (300 - 354.5%) -- guaranteed OHKO
05
Volcarona
BugFire
OFFENSIVE CHECK
26.046
88.0%
dies 6.37%
▾
252+ SpA Volcarona Flamethrower vs. 252 HP / 252+ SpD Ferrothorn: 436-516 (123.8 - 146.5%) -- guaranteed OHKO
06
Heatran
FireSteel
OFFENSIVE CHECK
111.965
84.2%
dies 5.83%
▾
252+ SpA Heatran Eruption (150 BP) vs. 252 HP / 252+ SpD Ferrothorn: 700-828 (198.8 - 235.2%) -- guaranteed OHKO
07
Zamazenta
Fighting
OFFENSIVE CHECK
156.741
72.3%
dies 6.14%
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Ferrothorn: 320-380 (90.9 - 107.9%) -- 50% chance to OHKO
08
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
90.222
70.9%
dies 7.71%
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Ferrothorn: 888-1048 (252.2 - 297.7%) -- guaranteed OHKO
09
Dragonite
DragonFlying
OFFENSIVE CHECK
88.045
69.7%
dies 8.32%
▾
252+ Atk Dragonite Fire Punch vs. 252 HP / 0 Def Ferrothorn: 292-348 (82.9 - 98.8%) -- guaranteed 2HKO after Leftovers recovery
10
Cinderace
Fire
OFFENSIVE CHECK
52.531
68.4%
dies 8.90%
▾
252+ Atk Cinderace Pyro Ball vs. 252 HP / 0 Def Ferrothorn: 636-748 (180.6 - 212.5%) -- guaranteed OHKO
11
Iron Valiant
FairyFighting
OFFENSIVE CHECK
95.14
68.0%
dies 8.22%
▾
0- Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Ferrothorn: 230-272 (65.3 - 77.2%) -- guaranteed 2HKO after Leftovers recovery
12
Kyurem
DragonIce
OFFENSIVE CHECK
137.325
67.8%
dies 6.77%
▾
252+ Atk Kyurem Icicle Spear (3 hits) vs. 252 HP / 0 Def Ferrothorn: 108-129 (30.6 - 36.6%) -- guaranteed 4HKO after Leftovers recovery
13
Terapagos
Normal
DEFENSIVE COUNTER
148.664
67.3%
dies 6.61%
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 252+ Def Terapagos: 138-163 (35.9 - 42.4%) -- guaranteed 3HKO
14
Urshifu-Rapid-Strike
FightingWater
OFFENSIVE CHECK
29.948
66.9%
dies 8.60%
▾
252+ Atk Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Ferrothorn: 342-404 (97.1 - 114.7%) -- 81.3% chance to OHKO
15
Kingambit
DarkSteel
DEFENSIVE COUNTER
115.834
66.8%
dies 7.50%
▾
0 Def Ferrothorn Body Press vs. 252 HP / 252+ Def Kingambit: 184-220 (45.5 - 54.4%) -- 52.3% chance to 2HKO
16
Tornadus-Therian
Flying
OFFENSIVE CHECK
122.764
66.7%
dies 7.27%
▾
252+ SpA Tornadus-Therian Heat Wave vs. 252 HP / 252+ SpD Ferrothorn: 264-312 (75 - 88.6%) -- guaranteed 2HKO after Leftovers recovery
17
Hatterene
PsychicFairy
OFFENSIVE CHECK
56.62
65.6%
dies 8.91%
▾
252+ SpA Hatterene Mystical Fire vs. 252 HP / 252+ SpD Ferrothorn: 244-288 (69.3 - 81.8%) -- guaranteed 2HKO after Leftovers recovery
18
Moltres
FireFlying
OFFENSIVE CHECK
72.288
65.5%
dies 7.90%
▾
252+ SpA Moltres Flamethrower vs. 252 HP / 252+ SpD Ferrothorn: 408-484 (115.9 - 137.5%) -- guaranteed OHKO
19
Sableye-Mega
DarkGhost
DEFENSIVE COUNTER
35.804
62.8%
dies 8.08%
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 252+ Def Sableye-Mega: 106-126 (34.8 - 41.4%) -- guaranteed 3HKO
20
Zapdos
ElectricFlying
OFFENSIVE CHECK
175.343
61.8%
dies 6.31%
▾
252+ SpA Zapdos Heat Wave vs. 252 HP / 252+ SpD Ferrothorn: 288-340 (81.8 - 96.5%) -- guaranteed 2HKO after Leftovers recovery
21
Keldeo
WaterFighting
SOFT CHECK
21.923
54.8%
dies 10.63%
▾
252+ SpA Keldeo Secret Sword vs. 252 HP / 0 Def Ferrothorn: 240-284 (68.1 - 80.6%) -- guaranteed 2HKO after Leftovers recovery
22
Venusaur-Mega
GrassPoison
SOFT CHECK
99.17
54.6%
dies 8.43%
▾
252+ SpA Venusaur-Mega Hidden Power Fire vs. 252 HP / 252+ SpD Ferrothorn: 180-216 (51.1 - 61.3%) -- 92.6% chance to 2HKO after Leftovers recovery
23
Great Tusk
GroundFighting
SOFT CHECK
119.986
51.3%
dies 7.85%
▾
252+ Atk Great Tusk Close Combat vs. 252 HP / 0 Def Ferrothorn: 344-408 (97.7 - 115.9%) -- 87.5% chance to OHKO
24
Melmetal
Steel
SOFT CHECK
137.896
51.1%
dies 7.31%
▾
252+ Atk Melmetal Superpower vs. 252 HP / 0 Def Ferrothorn: 246-290 (69.8 - 82.3%) -- guaranteed 2HKO after Leftovers recovery
25
Garchomp
DragonGround
SOFT CHECK
46.047
49.1%
dies 7.37%
▾
252+ Atk Garchomp Earthquake vs. 252 HP / 0 Def Ferrothorn: 144-169 (40.9 - 48%) -- guaranteed 3HKO after Leftovers recovery
26
Ogerpon-Wellspring
GrassWater
SOFT CHECK
139.528
46.8%
dies 7.23%
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Superpower vs. 252 HP / 0 Def Ferrothorn: 258-304 (73.2 - 86.3%) -- guaranteed 2HKO after Leftovers recovery
27
Ferrothorn
GrassSteel
SOFT CHECK
55.13
45.8%
dies 9.44%
▾
0 Def Ferrothorn Body Press vs. 252 HP / 0 Def Ferrothorn: 116-138 (32.9 - 39.2%) -- 9.6% chance to 3HKO after Leftovers recovery
28
Tapu Lele
PsychicFairy
SOFT CHECK
99.675
44.4%
dies 8.47%
▾
252+ SpA Tapu Lele Hidden Power Fire vs. 252 HP / 252+ SpD Ferrothorn: 188-224 (53.4 - 63.6%) -- guaranteed 2HKO after Leftovers recovery
29
Landorus-Therian
GroundFlying
SOFT CHECK
137.11
44.4%
dies 7.30%
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Ferrothorn: 154-183 (43.7 - 51.9%) -- guaranteed 3HKO after Leftovers recovery
30
Corviknight
FlyingSteel
SOFT CHECK
111.965
41.6%
dies 7.99%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Ferrothorn: 130-154 (36.9 - 43.7%) -- 99.5% chance to 3HKO after Leftovers recovery
Ranked #27 with 7.65% usage. Sorted by reliability score.