Group size estimator

How many trainers do I need to invite?

The Estimator is already "trainers of this attacker needed to finish inside the timer", so this page does not invent a number: it reads it off the boss's own ranked counter list for three realistic parties and re-simulates each of them at every level from 20 to 50.

Raid bossTierIVsWeatherFriendshipDodgingShadow attackersMega attackersLegendary attackers

Invite 3 to be safe — 3 if everyone is prepared

At level 40, a party of Luxio's top six counters needs 2.03 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.53 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:20. No level in this range makes it soloable with a prepared party. A duo works from level 45.

Luxio · Elite

electric

Weak to

ground

Boss CP: 25,808
Boss HP: 20,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Luxio at each attacker level
Attacker level	Six of the best counter	A prepared party	A mixed local group	Prepared solo time	Faints per timer
Level 20	3(2.59)	3(2.81)	4(3.57)	12:55	5.9
Level 25	3(2.13)	3(2.44)	4(3.09)	11:13	5.7
Level 30	3(2.03)	3(2.20)	3(2.78)	10:07	5.5
Level 35	2(1.86)	3(2.10)	3(2.66)	9:39	5.3
Level 40	2(1.80)	3(2.03)	3(2.53)	9:20	5.2
Level 45	2(1.75)	2(1.94)	3(2.44)	8:56	5.0
Level 50	2(1.64)	2(1.87)	3(2.36)	8:35	4.8

Whole trainers in bold, the raw estimator in brackets — 2.04 means two trainers is right on the line and three is comfortable.

Six of the best counter

Every trainer brings six copies of the single best counter — the theoretical floor.

2 trainers at level 40

Landorus (Therian)1.80

A prepared party

Each trainer brings the boss's top six counters, powered up and correctly TM'd.

3 trainers at level 40

Landorus (Therian)1.80
Groudon1.97
Eternatus2.01
Excadrill2.09
Garchomp2.15
Mamoswine2.15

A mixed local group

Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.

3 trainers at level 40

Rhydon2.41
Kyurem (White)2.41
Keldeo2.49
Golurk2.45
Mudsdale2.49
Donphan2.52

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Groudon

Mud Shot + Precipice Blades

3. Eternatus

Poison Jab + Dynamax Cannon

4. Excadrill

Mud-Slap + Scorching Sands

5. Garchomp

Mud Shot + Earth Power

6. Mamoswine

Mud-Slap + High Horsepower

See the full ranked counter list for Luxio · check a real lobby (win chance, who brings what) · make a share card of the top six

How this is worked out

The boss is ranked once at level 40 with rankCached (the same memoised call /raids makes), then the three bands — rank 1, ranks 1-6, ranks 13-24 — are re-simulated at each attacker level with an 8-run Monte Carlo each. Holding the party fixed and moving only its level is deliberate: it answers "what if my party were level 20" rather than "what would a level-20 player's completely different party be", and it is about ten times cheaper than re-ranking every attacker seven times. The Estimator itself is Pokebattler's definition, time to win including rejoin time divided by the raid timer.