Mine

on *:TEXT:!mbblacklist*:#: { if ($2 == $me) { halt }
if ($me isop $chan) && ($nick isop $chan) {
  set %blacklister2 $nick
  /writeini blacklist.ini nick $address($2,2) $2 $chan Blacklisted Reason: 

$3-
  msg $chan 4,1 $2 has been placed on $me $+ 's Blacklist by $nick $+ .
  mode $chan +b $address($2,2)
  kick $chan $2 Blacklisted!
    }
  }
}
on *:TEXT:!mbunblacklist*:#: { if ($me isop $chan) && ($nick isop $chan) {
  /remini blacklist.ini nick $address($2,2)
  msg $chan 4,1 $2 has been removed from $me $+ 's Blacklist by $nick $+ .
  mode $chan -b $address($2,2)
  }
}
on *:JOIN:#: { if $ini(blacklist.ini,nick,$address($nick,2))
  mode $chan +b $address($nick,2)
  kick $chan $nick 4,1You are blacklisted on this channel!
  }
}