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 4 to be safe — 3 if everyone is prepared

At level 40, a party of Dottler's top six counters needs 2.53 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 3.05 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 11:39. No level in this range makes it soloable with a prepared party.

Dottler · Elite

bugpsychic

Weak to

flyingrockbugghostfiredark

Boss CP: 18,918
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 Dottler 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	4(3.22)	4(3.58)	5(4.39)	16:28	5.9
Level 25	3(2.85)	4(3.11)	4(3.78)	14:17	5.8
Level 30	3(2.56)	3(2.78)	4(3.39)	12:49	5.6
Level 35	3(2.43)	3(2.65)	4(3.24)	12:12	5.5
Level 40	3(2.27)	3(2.53)	4(3.05)	11:39	5.2
Level 45	3(2.18)	3(2.44)	3(2.95)	11:13	5.1
Level 50	3(2.11)	3(2.37)	3(2.85)	10:54	4.9

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.

3 trainers at level 40

Necrozma (Dawn Wings)2.27

A prepared party

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

3 trainers at level 40

Necrozma (Dawn Wings)2.27
Blacephalon2.30
Rayquaza2.42
Reshiram2.71
Salamence2.73
Yveltal2.76

A mixed local group

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

4 trainers at level 40

Volcarona3.00
Lunala3.01
Heatran3.03
Zacian (Crowned Sword)3.05
Cinderace3.05
Honchkrow3.05

The party these numbers assume

1. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

2. Blacephalon

Astonish + Mind Blown

3. Rayquaza

Air Slash + Dragon Ascent

4. Reshiram

Fire Fang + Fusion Flare

5. Salamence

Fire Fang + Fly

6. Yveltal

Snarl + Oblivion Wing

See the full ranked counter list for Dottler · 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.