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 2 to be safe — 2 if everyone is prepared

At level 40, a party of Glimmora's top six counters needs 1.36 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.80 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 6:15. No level in this range makes it soloable with a prepared party. A duo works from level 20.

Glimmora · Tier 5

rockpoison

Weak to

groundsteelwaterpsychic

Boss CP: 44,293
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 Glimmora 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(1.91)	2(1.95)	3(2.73)	9:00	6.0
Level 25	2(1.71)	2(1.71)	3(2.32)	7:53	6.0
Level 30	2(1.41)	2(1.49)	3(2.02)	6:50	5.9
Level 35	2(1.27)	2(1.41)	2(1.90)	6:31	5.8
Level 40	2(1.25)	2(1.36)	2(1.80)	6:15	5.8
Level 45	2(1.19)	2(1.30)	2(1.73)	5:59	5.7
Level 50	2(1.17)	2(1.25)	2(1.68)	5:45	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.

2 trainers at level 40

Landorus (Therian)1.25

A prepared party

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

2 trainers at level 40

Landorus (Therian)1.25
Groudon1.31
Zacian (Crowned Sword)1.37
Excadrill1.38
Necrozma (Dusk Mane)1.41
Zamazenta (Crowned Shield)1.43

A mixed local group

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

2 trainers at level 40

Golurk1.68
Mudsdale1.70
Golem1.71
Donphan1.72
Mewtwo1.74
Hippowdon1.80

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Groudon

Mud Shot + Precipice Blades

3. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

4. Excadrill

Mud-Slap + Scorching Sands

5. Necrozma (Dusk Mane)

Psycho Cut + Sunsteel Strike

6. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

See the full ranked counter list for Glimmora · 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.