E3S4 - Outpost of Hell, questionable person shouting 'Fire in the Hole!'

[Konrad22]

1.12: It doesn't matter who deploys the barrel, it's always Kyara shouting 'Fire in the Hole!' next turn.
1.14: It doesn't matter who deploys the barrel, it's always Elynia shouting 'Fire in the Hole!' next turn.

[irydacea]

It's not gonna be always Kyara or Elynia in either version but it's always going to be one of two units.

This is purely a side-effect of the engine's unit table implementation:

                {RANDOM 1,2}

                [message]
                    side=$random
                    race=human,orc,wolf,goblin,faerie,elf
                    message= _ "Fire in the hole!"
                    scroll=no
                    [show_if]
                        {VARIABLE_BOOLEAN_EQUALS activated_charge_message_used no}
                    [/show_if]
                [/message]

While the side selection for the filter is explicitly randomized above (chooses between both player-controlled sides), the rest of the unit selection is not. Unless you explicitly write code to select a random unit from a set, code like this is just selecting the first unit matched by the filter, which is a deterministic outcome in all cases based on who got inserted into the game's live unit table first. I didn't feel it was an important issue at the time when I first wrote the scenario and had more pressing things to work on.