Heroes 5.5 WarGame Edition - Tactical Edition.

Artillery (catapult): additionally, before the battle in an open field, it kills 10% of the enemy creatures (rounding down).

Wouldn't it be better to make it similar to Leto's passive ability? Otherwise, it seems too straightforward. The difference could be that Leto's passive ability randomly selects a unit, while this ability could target random cells. And there probably needs to be some dependence on the characteristics, because the armies differ in both quantity and characteristics, and the catapult is always one, and simply mowing down 10% seems strange.