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 Glaceon's top six counters needs 3.01 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.08 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 13:51. No level in this range makes it soloable with a prepared party.

Glaceon · Elite

ice

Weak to

fightingrocksteelfire

Boss CP: 53,069
Boss HP: 20,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Glaceon 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(3.87)	5(4.49)	7(6.32)	20:41	6.0
Level 25	4(3.23)	4(3.68)	6(5.23)	16:56	6.0
Level 30	3(2.97)	4(3.30)	5(4.56)	15:10	6.0
Level 35	3(2.71)	4(3.14)	5(4.32)	14:27	6.0
Level 40	3(2.63)	4(3.01)	5(4.08)	13:51	6.0
Level 45	3(2.52)	3(2.87)	4(3.95)	13:12	6.0
Level 50	3(2.54)	3(2.77)	4(3.81)	12:44	5.9

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)2.63

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)2.63
Zamazenta (Crowned Shield)2.68
Necrozma (Dusk Mane)2.71
Keldeo3.04
Lucario3.51
Blacephalon3.49

A mixed local group

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

5 trainers at level 40

Kartana3.92
Urshifu (Rapid Strike)3.95
Cinderace4.01
Urshifu (Single Strike)4.04
Necrozma (Dawn Wings)4.07
Emboar4.07

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. Keldeo

Low Kick + Secret Sword

5. Lucario

Force Palm + Aura Sphere

6. Blacephalon

Incinerate + Mind Blown

See the full ranked counter list for Glaceon · 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.