Rillaboom build and sets

Q: What is the best Rillaboom build in Pokémon Champions?

The most used tournament build is Rillaboom @ Miracle Seed with Grassy Surge and Fake Out, Grassy Glide, High Horsepower and Wood Hammer (3,302 teams).

Q: What item should Rillaboom hold?

The most used items in tournaments are Miracle Seed (74.6%), Life Orb (7.6%) and Eject Button (6.3%).

Q: What spread (SP) should Rillaboom run?

The most common spread on the 1760+ ladder is 32 HP / 32 Atk / 2 Spe with a Adamant nature (as EVs: 252 HP / 252 Atk / 12 Spe).

Q: What counters Rillaboom?

Based on tournament matchups, teams with Delphox, Kommo-o and Kingambit have the best results against it.

Tier SReg M-CUpdated Nov 11

GrassAbilities: Overgrow · Grassy Surge

#1 tournament set

3,302 teams · has won a tournament

Items: Miracle Seed
Ability: Grassy Surge
Nature: Adamant
Spread (SP) · ladder 1760+: 32 HP / 32 Atk / 2 Spe

Fake Out
Grassy Glide
High Horsepower
Wood Hammer

Damage calc Save to team

SP and nature: the most used spread on the Showdown 1760+ ladder (tournaments publish item, ability and moves, not the spread).

#1 tournament set

Damage calc Save to team

Tournament usage: 44.3%
Win rate: 50.3%
Top cuts: 767
Games: 37,231

Base stats

HP100
Attack125
Defense90
Sp. Atk60
Sp. Def70
Speed85
Total530

In Reg M-C, Rillaboom showed up on 44.3% of tournament teams (8,254 teams through Nov 10, 2026), with a 50.3% win rate and 767 top cut appearances.

Most used tournament builds

The full Rillaboom sets that show up most on tournament teams (item, ability and all 4 moves).

Miracle Seed

Grassy Surge

Fake Out
Grassy Glide
High Horsepower
Wood Hammer

3,302 teams · has won a tournament

Miracle Seed

Grassy Surge

Fake Out
Grassy Glide
U-turn
Wood Hammer

2,185 teams · has won a tournament

Eject Button

Grassy Surge

Fake Out
Grassy Glide
Protect
U-turn

370 teams · has won a tournament

Items, moves and abilities

Items

Miracle Seed74.6%
Life Orb7.6%
Eject Button6.3%
Sitrus Berry4.5%
Occa Berry2.8%

Moves

Fake Out99%
Grassy Glide98.7%
Wood Hammer88.4%
High Horsepower52.6%
U-turn43.7%
Protect11.2%
Superpower1.5%
Knock Off1.2%

Abilities

Grassy Surge99.3%
Overgrow0.7%

Nature (stat alignment)

Adamant87%
Sassy3.9%
Brave3.3%

Most used spread (SP)

Spreads from the Showdown 1760+ ladder. Champions gives you 66 Stat Points (max 32 per stat); the EV equivalent is just for reference.

Nature	SP	As EVs	Stats at level 50	usage
Adamant	32 HP / 32 Atk / 2 Spe	252 HP / 252 Atk / 12 Spe	207 / 194 / 110 / 72 / 90 / 107	4.9%
Adamant	26 HP / 5 Atk / 1 Def / 31 SpD / 3 Spe	204 HP / 36 Atk / 4 Def / 244 SpD / 20 Spe	201 / 165 / 111 / 72 / 121 / 108	4.6%
Adamant	32 HP / 32 Atk / 2 SpD	252 HP / 252 Atk / 12 SpD	207 / 194 / 110 / 72 / 92 / 105	4.1%
Sassy	32 HP / 2 Def / 32 SpD	252 HP / 12 Def / 252 SpD	207 / 145 / 112 / 80 / 134 / 94	2.3%
Adamant	26 HP / 30 Atk / 1 Def / 4 SpD / 5 Spe	204 HP / 236 Atk / 4 Def / 28 SpD / 36 Spe	201 / 192 / 111 / 72 / 94 / 110	2.2%

Rillaboom Speed

Final Speed at level 50. Trick Room: the minimum. Tailwind doubles any value.

Pokémon	Base	Min (TR)	0 SP	32 SP	Max	Scarf
Rillaboom	85	94	105	137	150	225

See the full Speed tier table

Most common partners

% of teams with Rillaboom that also bring each Pokémon.

Incineroar49.7%
Raichu40.1%
Gholdengo37.4%
Sneasler34.5%
Garchomp28.8%
Volcarona20.8%

Good and bad matchups

Win rate of teams with this Pokémon against teams with each opponent (only matchups with 100+ games).

Does well against

Swampert53.7% · 1,462 games
Gardevoir53.2% · 2,059 games
Indeedee-F53.1% · 4,820 games

Struggles against

Delphox44.6% · 2,224 games
Kommo-o45% · 1,496 games
Kingambit46.4% · 8,568 games

Weaknesses and resistances

Damage multiplier of each move type against this Pokémon's types.

4x weakness

—

2x weakness

Fire
Ice
Poison
Flying
Bug

Resists (½)

Water
Electric
Grass
Ground

Resists (¼)

—

Immune

—

In Showdown games

2,342 rated games (1500+) with this Pokémon on the team.

brought to battle

57.1%

in the lead

19.5%

Most used moves in games

Fake Out47.7%
Grassy Glide43%
Wood Hammer38.4%
High Horsepower17.3%
U-turn9.1%
Protect2.2%

Leads alongside

Damage calc with RillaboomOpens the calculator with the most used build already set.Analyze my team with AIGame plan, leads and matchups for your team against the meta.Play a tournamentOpen VGC tournaments on Caneko, online and free to host.

Frequently asked questions

What is the best Rillaboom build in Pokémon Champions?

The most used tournament build is Rillaboom @ Miracle Seed with Grassy Surge and Fake Out, Grassy Glide, High Horsepower and Wood Hammer (3,302 teams).

What item should Rillaboom hold?

The most used items in tournaments are Miracle Seed (74.6%), Life Orb (7.6%) and Eject Button (6.3%).

What spread (SP) should Rillaboom run?

The most common spread on the 1760+ ladder is 32 HP / 32 Atk / 2 Spe with a Adamant nature (as EVs: 252 HP / 252 Atk / 12 Spe).

What counters Rillaboom?

Based on tournament matchups, teams with Delphox, Kommo-o and Kingambit have the best results against it.

What is Rillaboom's Speed at level 50?

Base 85: 94 at minimum (Trick Room), 137 with 32 SP and a neutral nature, and 150 with 32 SP and a Speed nature.