Group size estimator
How many trainers do I need to invite?
Invite 6 to be safe — 5 if everyone is prepared
- Boss CP
- 56,910
- Boss HP
- 20,000
- Raid timer
- 300s
- Party used
- 6
Trainers needed, by attacker level
Scroll sideways for the mixed-lobby column.
| Attacker level | Six of the best counter | A prepared party | A mixed local group | Prepared solo time | Faints per timer |
|---|---|---|---|---|---|
| Level 20 | 7(6.33) | 8(7.00) | 9(8.89) | 32:14 | 6.0 |
| Level 25 | 6(5.14) | 6(5.73) | 7(6.99) | 26:22 | 6.0 |
| Level 30 | 5(4.09) | 5(4.85) | 6(5.75) | 22:18 | 6.0 |
| Level 35 | 4(3.69) | 5(4.46) | 6(5.43) | 20:31 | 6.0 |
| Level 40 | 4(3.47) | 5(4.19) | 6(5.14) | 19:16 | 6.0 |
| Level 45 | 4(3.36) | 5(4.05) | 5(4.95) | 18:38 | 6.0 |
| Level 50 | 4(3.31) | 4(3.83) | 5(4.71) | 17:39 | 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
- Keldeo3.47
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
5 trainers at level 40
- Keldeo3.47
- Terrakion4.14
- Lucario4.16
- Reshiram4.37
- Blacephalon4.40
- Heatran4.56
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
6 trainers at level 40
- Volcarona4.89
- Chandelure4.97
- Gallade5.05
- Delphox5.08
- Ho-Oh5.10
- Excadrill5.12
The party these numbers assume
See the full ranked counter list for Arceus (Steel) · 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.