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 2 to be safe — 2 if everyone is prepared

At level 40, a party of Dustox's top six counters needs 1.58 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.87 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 7:16. No level in this range makes it soloable with a prepared party. A duo works from level 25.

Dustox · Tier 5

bugpoison

Weak to

flyingrockfirepsychic

Boss CP: 18,412
Boss HP: 15,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Dustox 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	2(1.94)	3(2.22)	3(2.59)	10:13	5.9
Level 25	2(1.69)	2(1.93)	3(2.26)	8:53	5.6
Level 30	2(1.50)	2(1.73)	3(2.03)	7:57	5.3
Level 35	2(1.44)	2(1.65)	2(1.94)	7:37	5.0
Level 40	2(1.38)	2(1.58)	2(1.87)	7:16	4.9
Level 45	2(1.33)	2(1.52)	2(1.79)	7:01	4.8
Level 50	2(1.28)	2(1.47)	2(1.74)	6:47	4.7

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

Blacephalon1.38

A prepared party

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

2 trainers at level 40

Blacephalon1.38
Rayquaza1.50
Mewtwo1.56
Reshiram1.63
Salamence1.69
Hoopa (Unbound)1.73

A mixed local group

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

2 trainers at level 40

Toucannon1.82
Enamorus (Incarnate)1.84
Cinderace1.85
Volcarona1.85
Enamorus (Therian)1.85
Heatran1.87

The party these numbers assume

1. Blacephalon

Incinerate + Mind Blown

2. Rayquaza

Air Slash + Dragon Ascent

3. Mewtwo

Confusion + Psystrike

4. Reshiram

Fire Fang + Fusion Flare

5. Salamence

Fire Fang + Fly

6. Hoopa (Unbound)

Confusion + Psychic

See the full ranked counter list for Dustox · 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.