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 Passimian's top six counters needs 2.75 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 3.25 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 12:40. No level in this range makes it soloable with a prepared party.

Passimian · Elite

fighting

Weak to

flyingpsychicfairy

Boss CP: 44,338
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 Passimian 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(3.77)	5(4.15)	6(5.11)	19:07	5.9
Level 25	4(3.14)	4(3.40)	5(4.18)	15:39	5.8
Level 30	3(2.82)	4(3.04)	4(3.63)	13:59	5.6
Level 35	3(2.67)	3(2.89)	4(3.44)	13:17	5.6
Level 40	3(2.59)	3(2.75)	4(3.25)	12:40	5.5
Level 45	3(2.44)	3(2.64)	4(3.15)	12:10	5.5
Level 50	3(2.38)	3(2.56)	4(3.01)	11:47	5.4

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

Rayquaza2.59

A prepared party

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

3 trainers at level 40

Rayquaza2.59
Mewtwo2.59
Enamorus (Incarnate)2.66
Hoopa (Unbound)2.91
Tapu Lele2.89
Necrozma (Dawn Wings)2.88

A mixed local group

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

4 trainers at level 40

Toucannon3.14
Necrozma (Dusk Mane)3.13
Lugia3.13
Eternatus3.15
Hoopa3.18
Lunala3.21

The party these numbers assume

1. Rayquaza

Air Slash + Dragon Ascent

2. Mewtwo

Confusion + Psystrike

3. Enamorus (Incarnate)

Fairy Wind + Fly

4. Hoopa (Unbound)

Confusion + Psychic

5. Tapu Lele

Confusion + Nature's Madness

6. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

See the full ranked counter list for Passimian · 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.