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 Empoleon's top six counters needs 3.48 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.33 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 16:26. No level in this range makes it soloable with a prepared party.

Empoleon · Shadow Tier 5

watersteel

Weak to

fightinggroundelectric

Boss CP: 39,068
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 Empoleon 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(4.24)	6(5.44)	7(6.73)	25:41	6.0
Level 25	4(3.49)	5(4.52)	6(5.46)	21:21	6.0
Level 30	4(3.21)	4(3.95)	5(4.74)	18:40	6.0
Level 35	4(3.06)	4(3.72)	5(4.49)	17:34	6.0
Level 40	3(2.94)	4(3.48)	5(4.33)	16:26	6.0
Level 45	3(2.85)	4(3.33)	5(4.19)	15:43	6.0
Level 50	3(2.76)	4(3.20)	5(4.02)	15:08	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

Keldeo2.94

A prepared party

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

4 trainers at level 40

Keldeo2.94
Zeraora3.52
Terrakion3.55
Zekrom3.60
Xurkitree3.63
Lucario3.64

A mixed local group

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

5 trainers at level 40

Gallade4.02
Blaziken4.01
Electivire4.22
Conkeldurr4.23
Magnezone4.33
Mewtwo4.38

The party these numbers assume

1. Keldeo

Low Kick + Secret Sword

2. Zeraora

Volt Switch + Plasma Fists

3. Terrakion

Double Kick + Sacred Sword

4. Zekrom

Charge Beam + Fusion Bolt

5. Xurkitree

Thunder Shock + Discharge

6. Lucario

Force Palm + Aura Sphere

See the full ranked counter list for Empoleon · 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.