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 Amoonguss's top six counters needs 2.46 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.92 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 11:37. No level in this range makes it soloable with a prepared party.

Amoonguss · Shadow Tier 5

grasspoison

Weak to

flyingfirepsychicice

Boss CP: 25,837
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 Amoonguss 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(3.21)	4(3.71)	5(4.33)	17:31	6.0
Level 25	3(2.76)	4(3.14)	4(3.66)	14:49	6.0
Level 30	3(2.49)	3(2.69)	4(3.27)	12:43	6.0
Level 35	3(2.38)	3(2.56)	4(3.12)	12:05	6.0
Level 40	3(2.26)	3(2.46)	3(2.92)	11:37	5.9
Level 45	3(2.21)	3(2.36)	3(2.84)	11:10	5.9
Level 50	3(2.11)	3(2.27)	3(2.74)	10:43	5.8

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

Kyurem (White)2.26

A prepared party

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

3 trainers at level 40

Kyurem (White)2.26
Rayquaza2.39
Mewtwo2.43
Kyurem (Black)2.51
Blacephalon2.55
Reshiram2.60

A mixed local group

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

3 trainers at level 40

Toucannon2.80
Necrozma (Dawn Wings)2.84
Enamorus (Incarnate)2.87
Zamazenta (Crowned Shield)2.87
Eternatus2.87
Heatran2.93

The party these numbers assume

1. Kyurem (White)

Ice Fang + Ice Burn

2. Rayquaza

Air Slash + Dragon Ascent

3. Mewtwo

Psycho Cut + Psystrike

4. Kyurem (Black)

Dragon Tail + Freeze Shock

5. Blacephalon

Incinerate + Mind Blown

6. Reshiram

Fire Fang + Fusion Flare

See the full ranked counter list for Amoonguss · 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.