Heroes 5.5 WarGame Edition - Tactical Edition.

For now, I prefer the option where cursed creatures still need to be defeated first, but then can be summoned for free, rather than spending action points. This is as close as possible to the original, and the hero is directly motivated to search the map for specific creatures and hunt them down. If it turns out that this option is effective enough, it will be used as the basis.

The second priority, which is already guaranteed to be very effective in defeating enemies, is to summon cursed creatures of tiers 1-2/1-4/1-6/1-7 before the battle using scripts, without thinking too much, but with guaranteed power.