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 — 2 if everyone is prepared

At level 40, a party of Electivire's top six counters needs 2.00 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.49 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:12. No level in this range makes it soloable with a prepared party. A duo works from level 40.

Electivire · Tier 5

electric

Weak to

ground

Boss CP: 43,137
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 Electivire 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	3(2.63)	3(2.83)	4(3.72)	13:02	6.0
Level 25	3(2.26)	3(2.44)	4(3.12)	11:14	6.0
Level 30	3(2.07)	3(2.17)	3(2.75)	9:58	5.9
Level 35	3(2.03)	3(2.10)	3(2.60)	9:39	5.8
Level 40	2(1.86)	2(2.00)	3(2.49)	9:12	5.8
Level 45	2(1.80)	2(1.91)	3(2.41)	8:47	5.6
Level 50	2(1.76)	2(1.85)	3(2.34)	8:30	5.5

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

Groudon1.86

A prepared party

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

2 trainers at level 40

Groudon1.86
Landorus (Therian)1.90
Eternatus1.97
Excadrill2.05
Mamoswine2.10
Kyurem (Black)2.10

A mixed local group

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

3 trainers at level 40

Kyurem (White)2.34
Rhydon2.37
Golurk2.40
Keldeo2.44
Mudsdale2.48
Donphan2.50

The party these numbers assume

1. Groudon

Mud Shot + Precipice Blades

2. Landorus (Therian)

Mud Shot + Sandsear Storm

3. Eternatus

Poison Jab + Dynamax Cannon

4. Excadrill

Mud-Slap + Scorching Sands

5. Mamoswine

Mud-Slap + High Horsepower

6. Kyurem (Black)

Dragon Tail + Freeze Shock

See the full ranked counter list for Electivire · 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.