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 Fezandipiti's top six counters needs 1.86 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.57 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 8:35. No level in this range makes it soloable with a prepared party. A duo works from level 35.

Fezandipiti · Tier 5

poisonfairy

Weak to

groundsteelpsychic

Boss CP: 33,652
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 Fezandipiti 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(2.23)	3(2.66)	4(3.77)	12:15	6.0
Level 25	2(1.91)	3(2.30)	4(3.17)	10:35	5.9
Level 30	2(1.71)	3(2.06)	3(2.81)	9:28	5.7
Level 35	2(1.67)	2(1.95)	3(2.67)	8:59	5.6
Level 40	2(1.54)	2(1.86)	3(2.57)	8:35	5.5
Level 45	2(1.49)	2(1.79)	3(2.48)	8:13	5.4
Level 50	2(1.46)	2(1.74)	3(2.39)	8:02	5.2

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

Necrozma (Dusk Mane)1.54

A prepared party

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

2 trainers at level 40

Necrozma (Dusk Mane)1.54
Zacian (Crowned Sword)1.61
Zamazenta (Crowned Shield)1.65
Mewtwo1.97
Landorus (Therian)2.16
Necrozma (Dawn Wings)2.25

A mixed local group

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

3 trainers at level 40

Jirachi2.53
Kyurem (White)2.53
Hoopa2.52
Dialga2.53
Alakazam2.52
Dialga (Origin)2.56

The party these numbers assume

1. Necrozma (Dusk Mane)

Psycho Cut + Sunsteel Strike

2. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

3. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

4. Mewtwo

Psycho Cut + Psystrike

5. Landorus (Therian)

Mud Shot + Sandsear Storm

6. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

See the full ranked counter list for Fezandipiti · 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.