Someone

alias blacklist {
  echo -a 2Added $1 to the blacklist Reason: $2-
  writeini Blacklist.ini $1 blacklisted yes
  writeini Blacklist.ini $1 reason $iif($2,$2-,No reason given)
  amsg [Amsg] [Blacklist Update] I have just added $2 to my blacklist. Any channel I have halfop+op in $2 is banned. Reason: $iif($2,$2,No reason given)
}

on *:JOIN:#:{
  if ($readini(Blacklist.ini,$nick,blacklisted) == yes) {
    ban -k You are in the blacklist. reason: $readini(blacklist.ini,$nick,reason)
  }
}