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 — 3 if everyone is prepared

At level 40, a party of Feraligatr's top six counters needs 2.01 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.47 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:15. No level in this range makes it soloable with a prepared party. A duo works from level 45.

Feraligatr · Tier 5

water

Weak to

grasselectric

Boss CP: 38,389
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 Feraligatr 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(3.14)	4(3.28)	4(3.75)	15:05	6.0
Level 25	3(2.72)	3(2.58)	4(3.07)	11:52	6.0
Level 30	3(2.35)	3(2.28)	3(2.74)	10:30	6.0
Level 35	3(2.10)	3(2.13)	3(2.62)	9:47	6.0
Level 40	2(1.94)	3(2.01)	3(2.47)	9:15	6.0
Level 45	2(1.87)	2(1.95)	3(2.38)	8:58	6.0
Level 50	2(1.75)	2(1.86)	3(2.30)	8:34	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.

2 trainers at level 40

Regieleki1.94

A prepared party

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

3 trainers at level 40

Regieleki1.94
Zeraora2.00
Xurkitree2.01
Kartana2.02
Thundurus (Therian)2.05
Zekrom2.05

A mixed local group

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

3 trainers at level 40

Electivire2.36
Raikou2.39
Chesnaught2.42
Roserade2.44
Zapdos2.46
Tapu Bulu2.48

The party these numbers assume

1. Regieleki

Thunder Shock + Thunder Cage

2. Zeraora

Spark + Plasma Fists

3. Xurkitree

Thunder Shock + Discharge

4. Kartana

Razor Leaf + Leaf Blade

5. Thundurus (Therian)

Volt Switch + Wildbolt Storm

6. Zekrom

Charge Beam + Fusion Bolt

See the full ranked counter list for Feraligatr · 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.