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 — 4 if everyone is prepared

At level 40, a party of Hisuian Typhlosion's top six counters needs 3.49 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 3.91 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 16:29. No level in this range makes it soloable with a prepared party.

Hisuian Typhlosion · Shadow Tier 5

fireghost

Weak to

groundrockghostwaterdark

Boss CP: 42,372
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 Hisuian Typhlosion 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	6(5.67)	6(5.22)	7(6.16)	24:40	6.0
Level 25	5(4.95)	5(4.64)	6(5.08)	21:55	6.0
Level 30	4(3.97)	4(3.99)	5(4.53)	18:51	6.0
Level 35	4(3.83)	4(3.75)	5(4.20)	17:42	6.0
Level 40	4(3.38)	4(3.49)	4(3.91)	16:29	6.0
Level 45	4(3.28)	4(3.37)	4(3.79)	15:56	6.0
Level 50	4(3.17)	4(3.29)	4(3.66)	15:34	5.9

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.

4 trainers at level 40

Necrozma (Dawn Wings)3.38

A prepared party

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

4 trainers at level 40

Necrozma (Dawn Wings)3.38
Landorus (Therian)3.33
Groudon3.46
Darkrai3.54
Eternatus3.60
Tyranitar3.62

A mixed local group

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

4 trainers at level 40

Garchomp3.77
Greninja3.85
Rhyperior3.82
Glimmora3.85
Primarina3.86
Hisuian Samurott3.92

The party these numbers assume

1. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

2. Landorus (Therian)

Mud Shot + Sandsear Storm

3. Groudon

Mud Shot + Precipice Blades

4. Darkrai

Snarl + Foul Play

5. Eternatus

Dragon Tail + Dynamax Cannon

6. Tyranitar

Bite + Brutal Swing

See the full ranked counter list for Hisuian Typhlosion · 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.