[Kingly_Krab]

Try this:

sub EVENT_ITEM {
    if(plugin::check_handin(\%itemcount, 11602 => 1, 59943 => 1, 188016 => 1, 188015 => 1)) {
        plugin::Whisper("Here is your kobold skull infused with the power of the white dragon scales.");
        quest::summonitem(188013);
    } elsif(plugin::check_handin(\%itemcount, 11622 => 1, 59943 => 1, 188016 => 1, 188015 => 1)){
        plugin::Whisper("Here is your kobold skull infused with the power of the red dragon scales.");
        quest::summonitem(188012);
    } elsif(plugin::check_handin(\%itemcount, 188031 => 1)) {
        plugin::Whisper("This is not good. We must investigate this matter immediately. Take this note to my spy. He is currently on a mission off the Great Divide, attempting to infiltrate the laboratory of a great alchemist.");
        quest::summonitem(188032);
    }
    plugin::return_items(\%itemcount);
}