Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Diancie-Mega
RockFairy
OFFENSIVE CHECK
26.29
90.7%
dies 5.65%
▾
0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Yveltal: 306-360 (67.1 - 78.9%) -- guaranteed 2HKO
02
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
561.571
81.8%
dies 2.80%
▾
252+ SpA Life Orb Yveltal Oblivion Wing vs. 252 HP / 252+ SpD Arceus-Fairy: 121-142 (27.2 - 31.9%) -- guaranteed 4HKO
03
Tyranitar-Mega
RockDark
DEFENSIVE COUNTER
28.312
76.8%
dies 7.93%
▾
0- Atk Life Orb Yveltal U-turn vs. 252 HP / 0 Def Tyranitar-Mega: 104-125 (25.7 - 30.9%) -- guaranteed 4HKO
04
Eternatus
PoisonDragon
OFFENSIVE CHECK
573.408
72.6%
dies 3.20%
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Yveltal: 340-402 (74.5 - 88.1%) -- guaranteed 2HKO
05
Chien-Pao
DarkIce
OFFENSIVE CHECK
228.422
69.9%
dies 5.22%
▾
252+ Atk Choice Band Sword of Ruin Chien-Pao Icicle Crash vs. 252 HP / 0 Def Yveltal: 602-710 (132 - 155.7%) -- guaranteed OHKO
06
Magearna
SteelFairy
OFFENSIVE CHECK
22.942
67.7%
dies 9.76%
▾
252+ SpA Magearna Fleur Cannon vs. 252 HP / 252+ SpD Yveltal: 338-402 (74.1 - 88.1%) -- guaranteed 2HKO
07
Garganacl
Rock
DEFENSIVE COUNTER
67.862
65.0%
dies 8.12%
▾
252+ SpA Life Orb Dark Aura Yveltal Dark Pulse vs. 252 HP / 252+ SpD Garganacl: 192-227 (47.5 - 56.1%) -- 28.1% chance to 2HKO after Leftovers recovery
08
Melmetal
Steel
DEFENSIVE COUNTER
145.569
64.9%
dies 6.76%
▾
252+ SpA Life Orb Dark Aura Yveltal Dark Pulse vs. 252 HP / 252+ SpD Melmetal: 234-277 (49.3 - 58.4%) -- 98% chance to 2HKO
09
Arceus
Normal
DEFENSIVE COUNTER
256.397
63.8%
dies 5.17%
▾
0- Atk Life Orb Dark Aura Yveltal Knock Off (97.5 BP) vs. 252 HP / 0 Def Arceus: 177-211 (39.8 - 47.5%) -- guaranteed 3HKO
10
Arceus-Dark
Dark
DEFENSIVE COUNTER
481.469
63.3%
dies 3.74%
▾
0- Atk Life Orb Yveltal U-turn vs. 252 HP / 0 Def Arceus-Dark: 130-153 (29.2 - 34.4%) -- 4.8% chance to 3HKO
11
Mewtwo-Mega-X
PsychicFighting
OFFENSIVE CHECK
152.35
63.1%
dies 6.72%
▾
252+ Atk Mewtwo-Mega-X Stone Edge vs. 252 HP / 0 Def Yveltal: 334-394 (73.2 - 86.4%) -- guaranteed 2HKO
12
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
1,248.998
62.7%
dies 2.35%
▾
+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Yveltal: 560-662 (122.8 - 145.1%) -- guaranteed OHKO
13
Kyogre
Water
DEFENSIVE COUNTER
69.604
61.7%
dies 8.00%
▾
0- Atk Life Orb Dark Aura Yveltal Knock Off (97.5 BP) vs. 252 HP / 0 Def Kyogre: 226-266 (55.9 - 65.8%) -- guaranteed 2HKO
14
Mewtwo
Psychic
OFFENSIVE CHECK
120.824
61.5%
dies 7.59%
▾
252+ SpA Life Orb Mewtwo Thunderbolt vs. 252 HP / 252+ SpD Yveltal: 234-276 (51.3 - 60.5%) -- guaranteed 2HKO
15
Chi-Yu
DarkFire
OFFENSIVE CHECK
68.264
58.2%
dies 8.09%
▾
252+ SpA Beads of Ruin Chi-Yu Overheat vs. 252 HP / 252+ SpD Yveltal: 234-276 (51.3 - 60.5%) -- guaranteed 2HKO
16
Kingambit
DarkSteel
DEFENSIVE COUNTER
40.147
57.4%
dies 7.81%
▾
252+ SpA Life Orb Dark Aura Yveltal Dark Pulse vs. 252 HP / 252+ SpD Kingambit: 99-117 (24.5 - 28.9%) -- 99.8% chance to 4HKO
17
Kyogre-Primal
Water
OFFENSIVE CHECK
380.103
55.2%
dies 4.40%
▾
252+ SpA Kyogre-Primal Water Spout (150 BP) vs. 252 HP / 252+ SpD Yveltal in Heavy Rain: 378-445 (82.8 - 97.5%) -- guaranteed 2HKO
18
Calyrex-Ice
PsychicIce
SOFT CHECK
118.997
54.5%
dies 7.83%
▾
252+ Atk Calyrex-Ice Glacial Lance vs. 252 HP / 0 Def Yveltal: 540-636 (118.4 - 139.4%) -- guaranteed OHKO
19
Kyurem-Black
DragonIce
SOFT CHECK
25.131
52.4%
dies 9.96%
▾
252+ Atk Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Yveltal: 642-756 (140.7 - 165.7%) -- guaranteed OHKO
20
Arceus-Ground
Ground
SOFT CHECK
415.142
52.4%
dies 4.24%
▾
0- Atk Arceus-Ground Stone Edge vs. 252 HP / 0 Def Yveltal: 158-188 (34.6 - 41.2%) -- guaranteed 3HKO
21
Ting-Lu
DarkGround
SOFT CHECK
22.101
47.0%
dies 10.62%
22
Yveltal
DarkFlying
SOFT CHECK
961.817
46.7%
dies 2.78%
▾
252+ SpA Life Orb Yveltal Oblivion Wing vs. 252 HP / 252+ SpD Yveltal: 138-164 (30.2 - 35.9%) -- 36.2% chance to 3HKO
23
Fezandipiti
PoisonFairy
SOFT CHECK
87.791
46.6%
dies 9.10%
▾
252+ Atk Fezandipiti Play Rough vs. 252 HP / 0 Def Yveltal: 266-314 (58.3 - 68.8%) -- guaranteed 2HKO
24
Zygarde
DragonGround
SOFT CHECK
722.214
44.5%
dies 3.19%
▾
252+ Atk Zygarde Stone Edge vs. 252 HP / 0 Def Yveltal: 208-246 (45.6 - 53.9%) -- 46.1% chance to 2HKO
25
Rayquaza
DragonFlying
SOFT CHECK
122.622
43.9%
dies 7.69%
▾
252+ Atk Choice Band Rayquaza Dragon Ascent vs. 252 HP / 0 Def Yveltal: 375-442 (82.2 - 96.9%) -- guaranteed 2HKO
26
Chansey
Normal
SOFT CHECK
142.855
43.6%
dies 7.06%
▾
Chansey Seismic Toss vs. 252 HP Yveltal: 100-100 (21.9 - 21.9%) -- guaranteed 5HKO
27
Pheromosa
BugFighting
SOFT CHECK
34.763
43.5%
dies 8.41%
▾
252+ Atk Choice Band Pheromosa Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Yveltal: 472-558 (103.5 - 122.3%) -- guaranteed OHKO
28
Lunala
PsychicGhost
SOFT CHECK
159.927
41.5%
dies 6.59%
▾
+1 252+ SpA Lunala Meteor Beam vs. 252 HP / 252+ SpD Yveltal: 328-386 (71.9 - 84.6%) -- guaranteed 2HKO
29
Salamence-Mega
DragonFlying
SOFT CHECK
23.443
40.7%
dies 10.14%
▾
252+ Atk Aerilate Salamence-Mega Double-Edge vs. 252 HP / 0 Def Yveltal: 292-345 (64 - 75.6%) -- guaranteed 2HKO
30
Terapagos
Normal
SOFT CHECK
50.211
40.2%
dies 9.76%
▾
252+ SpA Terapagos Tera Starstorm vs. 252 HP / 252+ SpD Yveltal: 102-120 (22.3 - 26.3%) -- 10.1% chance to 4HKO
Ranked #3 with 39.35% usage. Sorted by reliability score.