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 Mega Lopunny's top six counters needs 3.25 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 3.76 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 15:07. No level in this range makes it soloable with a prepared party.

Mega Lopunny · Mega Legendary

normalfighting

Weak to

fightingflyingpsychicfairy

Boss CP: 67,416
Boss HP: 22,500
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Mega Lopunny 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(4.76)	6(5.47)	7(6.30)	25:26	6.0
Level 25	5(4.27)	5(4.67)	6(5.24)	21:42	6.0
Level 30	4(3.07)	4(3.64)	5(4.31)	16:55	6.0
Level 35	3(2.97)	4(3.42)	4(3.93)	15:53	6.0
Level 40	3(2.87)	4(3.25)	4(3.76)	15:07	6.0
Level 45	3(2.80)	4(3.12)	4(3.61)	14:30	6.0
Level 50	3(2.62)	4(3.01)	4(3.49)	13:59	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

Keldeo2.87

A prepared party

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

4 trainers at level 40

Keldeo2.87
Mewtwo3.08
Rayquaza3.08
Galarian Zapdos3.47
Galarian Articuno3.47
Enamorus (Incarnate)3.54

A mixed local group

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

4 trainers at level 40

Latios3.63
Lucario3.57
Yveltal3.66
Gallade3.70
Lunala3.78
Salamence3.75

The party these numbers assume

1. Keldeo

Low Kick + Secret Sword

2. Mewtwo

Psycho Cut + Psystrike

3. Rayquaza

Air Slash + Dragon Ascent

4. Galarian Zapdos

Counter + Fly

5. Galarian Articuno

Psycho Cut + Fly

6. Enamorus (Incarnate)

Fairy Wind + Fly

See the full ranked counter list for Mega Lopunny · 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.