[Scripting Question] Assistance in making a custom function code that deals damage to the opponents part.

[MSGTNP]

As the title suggests, I was wondering If I could get some help from those whom are far more experienced than me at adding new scripts into the system. That said, I wanted to make a new function code for an attack that not only does damage to the active Pokémon on the other side but the entire party as well after I was reminded of a series of high powered, endgame moves found in Pokemon Zeta/Insurgence.

I have asked this question prior to asking now and Maruno had mentioned doing a pseudo fusion of sorts with the function codes for Aromatherapy and flame burst but upon finding said function code and spending about an hour trying to understand the code, I haven't made any progress since I can't figure out what line of code does what most of the time nor do I know what line of code I can edit and what options I have. I'm trying to not be lazy or be a pain in the behind but I just can't quite figure it out since aromatherapy is unique amongst all the function codes. I can't even determine what command separates the players party from the opponent's party. Any help would be appreciated on the matter.

EDIT 1

After some digging around, I managed to find what I was looking for I think with someone's assistance however when I entered this

class PokeBattle_Move_500 < PokeBattle_Move
def pbEffect(attacker,opponent)
ret=super(attacker,opponent)
alive = []
[email protected](opponent.index)

for i in 0..party.length-1
alive.push(party) if party.hp > 0
end

displaymessage=false
for i in 0..party.length-1
if i != opponent.pokemonIndex
@battle.pbDisplay(_INTL("The rest of the party was hit!")) if !displaymessage
displaymessage=true
if party.hp < 25
party.hp=0
else
party.hp = party.hp - 25
end
end

Into the script editor, I kept getting this syntax error

Script line" line e:Syntax error

168:Move_Effects_500+:25:syntax error: unexpected end-of-input, expecting `end'

Since it already has the ends like the countless other effects, I'm not sure exactly what the issue is other than a line of code is obviously missing a "end" but I don't know which one. Trying to educate myself on effects is proving difficult.