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 5 to be safe — 4 if everyone is prepared

At level 40, a party of Typhlosion's top six counters needs 3.65 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.24 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 16:47. No level in this range makes it soloable with a prepared party.

Typhlosion · Elite

fire

Weak to

groundrockwater

Boss CP: 46,149
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 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	7(6.59)	6(5.87)	7(6.66)	27:00	6.0
Level 25	6(5.69)	6(5.07)	6(5.49)	23:19	5.9
Level 30	5(4.16)	5(4.07)	5(4.60)	18:44	5.9
Level 35	4(3.56)	4(3.79)	5(4.38)	17:27	5.9
Level 40	4(3.35)	4(3.65)	5(4.24)	16:47	5.8
Level 45	4(3.09)	4(3.46)	5(4.03)	15:55	5.8
Level 50	4(3.02)	4(3.35)	4(3.90)	15:24	5.8

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.

4 trainers at level 40

Landorus (Therian)3.35

A prepared party

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

4 trainers at level 40

Landorus (Therian)3.35
Eternatus3.51
Glimmora3.70
Garchomp3.70
Inteleon3.79
Tyrantrum3.82

A mixed local group

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

5 trainers at level 40

Volcanion4.13
Greninja4.18
Primarina4.18
Groudon4.27
Rhyperior4.17
Golisopod4.15

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Eternatus

Poison Jab + Dynamax Cannon

3. Glimmora

Rock Throw + Meteor Beam

4. Garchomp

Mud Shot + Earth Power

5. Inteleon

Water Gun + Hydro Cannon

6. Tyrantrum

Rock Throw + Meteor Beam

See the full ranked counter list for 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.