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 3.77 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.37 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 17:48. No level in this range makes it soloable with a prepared party.

Typhlosion · Shadow Tier 5

fire

Weak to

groundrockwater

Boss CP: 39,966
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 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(6.31)	7(6.16)	7(6.76)	29:06	6.0
Level 25	6(5.78)	6(5.29)	6(5.81)	24:59	5.9
Level 30	5(4.10)	5(4.46)	6(5.00)	21:03	5.8
Level 35	4(3.58)	5(4.08)	5(4.72)	19:17	5.8
Level 40	4(3.38)	4(3.77)	5(4.37)	17:48	5.8
Level 45	4(3.27)	4(3.63)	5(4.26)	17:09	5.7
Level 50	4(3.18)	4(3.49)	5(4.15)	16:29	5.7

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.

4 trainers at level 40

Landorus (Therian)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

Landorus (Therian)3.38
Eternatus3.64
Garchomp3.81
Glimmora3.89
Necrozma (Dawn Wings)3.89
Groudon4.00

A mixed local group

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

5 trainers at level 40

Greninja4.21
Rhyperior4.22
Primarina4.26
Kingler4.36
Swampert4.35
Palkia (Origin)4.37

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Eternatus

Dragon Tail + Dynamax Cannon

3. Garchomp

Mud Shot + Earth Power

4. Glimmora

Rock Throw + Meteor Beam

5. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

6. Groudon

Mud Shot + Precipice Blades

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.