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 — 1 if everyone is prepared

At level 40, a party of Wooper's top six counters needs 0.95 trainers (round up: 1), and a mixed lobby of ranks 13-24 needs 1.15 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 4:30. A prepared solo becomes possible at level 35. A duo works from level 20.

Wooper · Shadow Tier 5

waterground

Weak to

grass

Boss CP: 9,920
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 Wooper 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(1.22)	2(1.30)	2(1.59)	6:08	5.4
Level 25	2(1.02)	2(1.14)	2(1.40)	5:24	4.8
Level 30	1(0.93)	2(1.04)	2(1.26)	4:54	4.3
Level 35	1(0.88)	1(0.99)	2(1.20)	4:40	3.9
Level 40	1(0.85)	1(0.95)	2(1.15)	4:30	3.7
Level 45	1(0.81)	1(0.91)	2(1.11)	4:19	3.3
Level 50	1(0.78)	1(0.89)	2(1.07)	4:12	3.1

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

Kartana0.85

A prepared party

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

1 trainer at level 40

Kartana0.85
Shaymin (Sky)0.91
Zarude0.96
Rillaboom0.97
Meowscarada1.01
Roserade1.01

A mixed local group

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

2 trainers at level 40

Venusaur1.11
Shaymin (Land)1.11
Breloom1.10
Tangrowth1.13
Torterra1.14
Celebi1.16

The party these numbers assume

1. Kartana

Razor Leaf + Leaf Blade

2. Shaymin (Sky)

Magical Leaf + Grass Knot

3. Zarude

Vine Whip + Power Whip

4. Rillaboom

Razor Leaf + Frenzy Plant

5. Meowscarada

Leafage + Frenzy Plant

6. Roserade

Magical Leaf + Grass Knot

See the full ranked counter list for Wooper · 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.