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 — 4 if everyone is prepared

At level 40, a party of Entei's top six counters needs 3.38 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 3.85 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 15:33. No level in this range makes it soloable with a prepared party.

Entei · Elite

fire

Weak to

groundrockwater

Boss CP: 48,218
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 Entei 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	6(5.51)	6(5.30)	6(5.87)	24:23	6.0
Level 25	5(4.74)	5(4.51)	5(4.91)	20:46	6.0
Level 30	5(4.06)	4(3.83)	5(4.27)	17:37	6.0
Level 35	4(3.61)	4(3.56)	5(4.05)	16:24	6.0
Level 40	4(3.18)	4(3.38)	4(3.85)	15:33	6.0
Level 45	4(3.04)	4(3.28)	4(3.72)	15:05	6.0
Level 50	3(2.94)	4(3.10)	4(3.61)	14:16	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.

4 trainers at level 40

Landorus (Therian)3.18

A prepared party

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

4 trainers at level 40

Landorus (Therian)3.18
Inteleon3.29
Kyogre3.34
Quaquaval3.43
Eternatus3.49
Groudon3.55

A mixed local group

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

4 trainers at level 40

Garchomp3.66
Tyrantrum3.65
Gigalith3.73
Glimmora3.80
Swampert3.85
Terrakion3.85

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Inteleon

Water Gun + Hydro Cannon

3. Kyogre

Waterfall + Origin Pulse

4. Quaquaval

Water Gun + Hydro Cannon

5. Eternatus

Dragon Tail + Dynamax Cannon

6. Groudon

Mud Shot + Precipice Blades

See the full ranked counter list for Entei · 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.