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 4 to be safe — 4 if everyone is prepared

At level 40, a party of Venusaur's top six counters needs 3.23 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 3.91 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 15:14. No level in this range makes it soloable with a prepared party.

Venusaur · Shadow Tier 5

grasspoison

Weak to

flyingfirepsychicice

Boss CP: 37,259
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 Venusaur 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	5(4.40)	5(4.94)	6(5.97)	23:20	6.0
Level 25	4(3.73)	5(4.25)	5(4.99)	20:04	6.0
Level 30	4(3.35)	4(3.66)	5(4.38)	17:17	6.0
Level 35	4(3.18)	4(3.42)	5(4.13)	16:09	6.0
Level 40	4(3.03)	4(3.23)	4(3.91)	15:14	6.0
Level 45	3(2.90)	4(3.10)	4(3.77)	14:37	6.0
Level 50	3(2.85)	4(3.01)	4(3.65)	14:13	6.0

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.

4 trainers at level 40

Kyurem (White)3.03

A prepared party

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

4 trainers at level 40

Kyurem (White)3.03
Rayquaza3.12
Blacephalon3.21
Mewtwo3.22
Kyurem (Black)3.34
Salamence3.44

A mixed local group

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

4 trainers at level 40

Yveltal3.70
Enamorus (Incarnate)3.79
Eternatus3.81
Toucannon3.83
Heatran3.89
Volcarona3.96

The party these numbers assume

1. Kyurem (White)

Ice Fang + Ice Burn

2. Rayquaza

Air Slash + Dragon Ascent

3. Blacephalon

Incinerate + Mind Blown

4. Mewtwo

Psycho Cut + Psystrike

5. Kyurem (Black)

Dragon Tail + Freeze Shock

6. Salamence

Fire Fang + Fly

See the full ranked counter list for Venusaur · 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.