[AndMetal]

Try this:

sub EVENT_ITEM { 
	if ($itemcount{17} == 1) {
		if ($class eq "Paladin" || $class eq "Bard") {
			quest::summonitem(18);
			quest::shout("Congratulations $name");
		}
	} else {
		plugin::return_items(\%itemcount);
		quest::say("WRNG ITMZ FTWZ!!1");
	}
}

You could also do it this way (all on 1 line):

sub EVENT_ITEM {
	if ($itemcount{17} == 1 && ($class eq "Paladin" || $class eq "Bard")) {
		quest::summonitem (18);
		quest::shout("Congratulations $name");
	}
}

Hope this helps.