Okay, comrades, you'll drive me crazy with your questions!
In short:
You can leave three heroes! Moreover, the skills of the "stuck" hero, the main Hero, and the hero who performs the last action can be taken into account when calculating the results.

Sincerely.

P.S. If I see even one more question on this topic, beware, I'm terrible when I'm angry! :D

2 vbn
Furthermore, as far as I remember, the rules initially stated that
only one secondary hero could be in the final save.

4. After reaching the last action (after which the victory occurs), you need to save again.
Note: Only the heroes who participate in the mission should remain in the final save, i.e., the heroes who are needed for the plot of the campaign. (There can be 2-3 of them, depending on the specific mission). The rest of the heroes must be DISMISSED. As an exception: It is allowed to leave ONE non-plot hero, but only if the non-plot hero performs the last action that leads to victory.
And here is another revised quote from Sage:
Quote:
Everything is clearly written in the rules.
1. Only plot heroes go to the next mission (for example, for the mini-tournament 1-1: Gem).
2. In addition to these heroes, you can leave one more hero in the final save if this hero is needed to perform the winning action (attacking the last hero/castle of the enemy).
3. If you have plot heroes in the save (for example, for the mini-tournament 1-1: Gem) and another hero, then the sum of the parameters will be counted for the hero with the higher sum.