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 6 to be safe — 4 if everyone is prepared

At level 40, a party of Mega Floette (Eternal Flower)'s top six counters needs 3.68 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 5.09 (round up: 6). The raid timer is 300 seconds and one prepared trainer alone would take 17:05. No level in this range makes it soloable with a prepared party.

Mega Floette (Eternal Flower) · Primal

fairy

Weak to

poisonsteel

Boss CP: 81,178
Boss HP: 22,500
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Mega Floette (Eternal Flower) 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	5(4.51)	6(5.38)	8(7.48)	25:02	6.0
Level 25	4(3.74)	5(4.55)	7(6.48)	21:08	6.0
Level 30	4(3.42)	5(4.14)	6(5.74)	19:13	6.0
Level 35	4(3.22)	4(3.96)	6(5.35)	18:24	6.0
Level 40	3(2.96)	4(3.68)	6(5.09)	17:05	5.9
Level 45	3(2.90)	4(3.55)	5(4.89)	16:31	5.8
Level 50	3(2.83)	4(3.44)	5(4.74)	16:00	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.

3 trainers at level 40

Zacian (Crowned Sword)2.96

A prepared party

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

4 trainers at level 40

Zacian (Crowned Sword)2.96
Zamazenta (Crowned Shield)3.00
Necrozma (Dusk Mane)3.04
Eternatus4.17
Metagross4.25
Necrozma (Dawn Wings)4.63

A mixed local group

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

6 trainers at level 40

Genesect (Burn)4.97
Genesect (Chill)4.97
Genesect (Douse)4.97
Genesect (Shock)4.97
Dialga5.00
Melmetal4.98

The party these numbers assume

1. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

2. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

3. Necrozma (Dusk Mane)

Metal Claw + Sunsteel Strike

4. Eternatus

Poison Jab + Sludge Bomb

5. Metagross

Bullet Punch + Meteor Mash

6. Necrozma (Dawn Wings)

Metal Claw + Moongeist Beam

See the full ranked counter list for Mega Floette (Eternal Flower) · 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.