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 Mega Emboar's top six counters needs 3.47 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.02 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 15:59. No level in this range makes it soloable with a prepared party.

Mega Emboar · Super Mega

firefighting

Weak to

flyinggroundwaterpsychic

Boss CP: 69,031
Boss HP: 25,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Mega Emboar 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(4.95)	6(5.41)	7(6.28)	24:53	6.0
Level 25	4(3.91)	5(4.57)	6(5.14)	21:01	6.0
Level 30	4(3.43)	5(4.01)	5(4.50)	18:27	6.0
Level 35	4(3.34)	4(3.69)	5(4.20)	16:59	6.0
Level 40	4(3.14)	4(3.47)	5(4.02)	15:59	6.0
Level 45	3(2.98)	4(3.34)	4(3.86)	15:22	6.0
Level 50	3(2.89)	4(3.22)	4(3.70)	14:49	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

Rayquaza3.14

A prepared party

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

4 trainers at level 40

Rayquaza3.14
Mewtwo3.23
Hoopa (Unbound)3.54
Galarian Articuno3.62
Moltres3.64
Necrozma (Dawn Wings)3.67

A mixed local group

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

5 trainers at level 40

Eternatus3.89
Lugia3.92
Latios3.92
Salamence3.93
Enamorus (Therian)3.94
Hoopa3.98

The party these numbers assume

1. Rayquaza

Air Slash + Dragon Ascent

2. Mewtwo

Confusion + Psystrike

3. Hoopa (Unbound)

Confusion + Psychic

4. Galarian Articuno

Confusion + Fly

5. Moltres

Wing Attack + Fly

6. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

See the full ranked counter list for Mega Emboar · 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.