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 3 to be safe — 2 if everyone is prepared

At level 40, a party of Mr. Rime's top six counters needs 1.55 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.16 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 7:08. No level in this range makes it soloable with a prepared party. A duo works from level 25.

Mr. Rime · Tier 5

icepsychic

Weak to

rockbugghoststeelfiredark

Boss CP: 38,723
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 Mr. Rime 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	2(1.98)	3(2.28)	4(3.09)	10:28	6.0
Level 25	2(1.69)	2(1.94)	3(2.66)	8:56	5.9
Level 30	2(1.53)	2(1.70)	3(2.38)	7:50	5.7
Level 35	2(1.48)	2(1.63)	3(2.26)	7:30	5.6
Level 40	2(1.37)	2(1.55)	3(2.16)	7:08	5.3
Level 45	2(1.33)	2(1.50)	3(2.09)	6:53	5.2
Level 50	2(1.31)	2(1.45)	2(2.00)	6:39	5.0

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.

2 trainers at level 40

Zacian (Crowned Sword)1.37

A prepared party

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

2 trainers at level 40

Zacian (Crowned Sword)1.37
Necrozma (Dusk Mane)1.42
Zamazenta (Crowned Shield)1.44
Necrozma (Dawn Wings)1.50
Blacephalon1.71
Metagross1.86

A mixed local group

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

3 trainers at level 40

Hydreigon2.06
Cinderace2.13
Dialga (Origin)2.12
Tyranitar2.13
Rampardos2.14
Absol2.16

The party these numbers assume

1. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

2. Necrozma (Dusk Mane)

Metal Claw + Sunsteel Strike

3. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

4. Necrozma (Dawn Wings)

Metal Claw + Moongeist Beam

5. Blacephalon

Astonish + Mind Blown

6. Metagross

Fury Cutter + Meteor Mash

See the full ranked counter list for Mr. Rime · 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.