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 2 to be safe — 2 if everyone is prepared

At level 40, a party of Mantine's top six counters needs 1.48 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.97 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 6:48. No level in this range makes it soloable with a prepared party. A duo works from level 25.

Mantine · Tier 5

waterflying

Weak to

electricrock

Boss CP: 30,991
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 Mantine 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	2(1.93)	3(2.07)	3(2.86)	9:32	6.0
Level 25	2(1.71)	2(1.81)	3(2.44)	8:19	5.9
Level 30	2(1.48)	2(1.61)	3(2.20)	7:24	5.8
Level 35	2(1.42)	2(1.54)	3(2.08)	7:06	5.7
Level 40	2(1.36)	2(1.48)	2(1.97)	6:48	5.6
Level 45	2(1.30)	2(1.42)	2(1.90)	6:31	5.5
Level 50	2(1.24)	2(1.36)	2(1.85)	6:16	5.4

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

Regieleki1.36

A prepared party

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

2 trainers at level 40

Regieleki1.36
Zeraora1.41
Thundurus (Therian)1.44
Xurkitree1.45
Zekrom1.51
Electivire1.68

A mixed local group

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

2 trainers at level 40

Tapu Koko1.86
Vikavolt1.89
Toxtricity1.90
Thundurus (Incarnate)1.91
Manectric1.94
Jolteon1.96

The party these numbers assume

1. Regieleki

Thunder Shock + Thunder Cage

2. Zeraora

Volt Switch + Plasma Fists

3. Thundurus (Therian)

Volt Switch + Wildbolt Storm

4. Xurkitree

Thunder Shock + Discharge

5. Zekrom

Charge Beam + Fusion Bolt

6. Electivire

Thunder Shock + Wild Charge

See the full ranked counter list for Mantine · 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.