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 Lopunny's top six counters needs 3.66 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.22 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 16:50. No level in this range makes it soloable with a prepared party.

Mega Lopunny · Super Mega

normalfighting

Weak to

fightingflyingpsychicfairy

Boss CP: 71,063
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 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	6(5.42)	7(6.21)	8(7.08)	28:35	6.0
Level 25	5(4.83)	6(5.25)	6(5.92)	24:10	6.0
Level 30	4(3.45)	5(4.10)	5(4.83)	18:51	6.0
Level 35	4(3.33)	4(3.86)	5(4.41)	17:45	6.0
Level 40	4(3.22)	4(3.66)	5(4.22)	16:50	6.0
Level 45	4(3.15)	4(3.50)	5(4.05)	16:07	6.0
Level 50	3(2.94)	4(3.38)	4(3.92)	15:33	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

Keldeo3.22

A prepared party

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

4 trainers at level 40

Keldeo3.22
Mewtwo3.47
Rayquaza3.49
Galarian Zapdos3.91
Galarian Articuno3.89
Enamorus (Incarnate)3.99

A mixed local group

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

5 trainers at level 40

Latios4.08
Lucario4.02
Yveltal4.11
Gallade4.15
Salamence4.22
Lunala4.25

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.