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 1 to be safe — 1 if everyone is prepared

At level 40, a party of Delphox's top six counters needs 0.69 trainers (round up: 1), and a mixed lobby of ranks 13-24 needs 0.79 (round up: 1). The raid timer is 180 seconds and one prepared trainer alone would take 2:02. A prepared solo becomes possible at level 25. A duo works from level 20.

Delphox · Tier 3

firepsychic

Weak to

groundrockghostwaterdark

Boss CP: 20,995
Boss HP: 3,600
Raid timer: 180s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Delphox 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	1(0.85)	2(1.05)	2(1.17)	3:05	5.8
Level 25	1(0.72)	1(0.88)	1(0.98)	2:34	5.3
Level 30	1(0.61)	1(0.77)	1(0.88)	2:16	4.6
Level 35	1(0.59)	1(0.73)	1(0.83)	2:08	4.1
Level 40	1(0.60)	1(0.69)	1(0.79)	2:02	3.7
Level 45	1(0.54)	1(0.67)	1(0.77)	1:57	3.4
Level 50	1(0.52)	1(0.64)	1(0.75)	1:53	3.2

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.

1 trainer at level 40

Necrozma (Dawn Wings)0.60

A prepared party

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

1 trainer at level 40

Necrozma (Dawn Wings)0.60
Landorus (Therian)0.67
Blacephalon0.71
Inteleon0.72
Darkrai0.72
Lunala0.74

A mixed local group

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

1 trainer at level 40

Glimmora0.77
Eternatus0.77
Quaquaval0.78
Greninja0.78
Crawdaunt0.79
Primarina0.79

The party these numbers assume

1. Necrozma (Dawn Wings)

Shadow Claw + Moongeist Beam

2. Landorus (Therian)

Mud Shot + Sandsear Storm

3. Blacephalon

Astonish + Shadow Ball

4. Inteleon

Water Gun + Hydro Cannon

5. Darkrai

Snarl + Foul Play

6. Lunala

Shadow Claw + Shadow Ball

See the full ranked counter list for Delphox · 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.