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 Mega Camerupt's top six counters needs 2.57 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 3.17 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 11:48. No level in this range makes it soloable with a prepared party.

Mega Camerupt · Super Mega

fireground

Weak to

waterground

Boss CP: 59,626
Boss HP: 25,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Mega Camerupt 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(3.42)	5(4.17)	6(5.03)	19:12	6.0
Level 25	3(2.97)	4(3.30)	5(4.17)	15:12	6.0
Level 30	3(2.68)	3(2.88)	4(3.59)	13:16	6.0
Level 35	3(2.46)	3(2.71)	4(3.31)	12:27	6.0
Level 40	3(2.34)	3(2.57)	4(3.17)	11:48	6.0
Level 45	3(2.24)	3(2.44)	4(3.05)	11:14	6.0
Level 50	3(2.16)	3(2.37)	3(2.93)	10:54	6.0

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

Kyogre2.34

A prepared party

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

3 trainers at level 40

Kyogre2.34
Inteleon2.48
Greninja2.62
Quaquaval2.59
Primarina2.62
Golisopod2.75

A mixed local group

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

4 trainers at level 40

Clawitzer2.86
Hisuian Samurott2.92
Feraligatr2.92
Tatsugiri3.03
Crawdaunt3.15
Palkia (Origin)3.24

The party these numbers assume

1. Kyogre

Waterfall + Origin Pulse

2. Inteleon

Water Gun + Hydro Cannon

3. Greninja

Water Shuriken + Hydro Cannon

4. Quaquaval

Water Gun + Hydro Cannon

5. Primarina

Waterfall + Hydro Cannon

6. Golisopod

Waterfall + Razor Shell

See the full ranked counter list for Mega Camerupt · 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.