Keru

Nah you cant do it by normal means, and the only other way is to ask @Zell 
 
I mean you might be able to whip up something silly like spawning an npc bullet and having it zoom towards a target 
 
But theres tons of usuable monsters projectiles that are in one of the newer renewal maps... fuck they are the robots and there is like 10 different variants

Change skill_db.txt:
 
254,5,6,4,6,0x48,0,10,1,no,33,0x100,0,magic,0, CR_GRANDCROSS,Grand Cross to
254,5,6,4,6,0x48,0,10,1,no,33,0,0,magic,0, CR_GRANDCROSS,Grand Cross  
This changes the
// 12 inf2 (skill information 2):// 0x0100- skill that damages/targets yourself so the selfhit is disabled.
 
They will still lose some HP due to the Grandcross, but it will be impossible to kill theirself.
 

You have to change the pre-re/skill_db.txt:
 
-2483,11,6,2,0,0x3,4,10,1,yes,0,0x2000,0,weapon,0,  GN_CRAZYWEED,Crazy Weed
-2484,0,6,2,2,0x2,3,10,1,no,0,0x2000,0,weapon,0,  GN_CRAZYWEED_ATK,Crazy Weed Attack
+2483,11,6,2,0,0x3,4,10,1,yes,0,0,0,none,0,  GN_CRAZYWEED,Crazy Weed
+2484,0,6,2,2,0,0,10,1,no,0,0,0,weapon,0,  GN_CRAZYWEED_ATK,Crazy Weed Attack
 
and the pre-re/skill_unit_db.txt :
+2484,0x86,   ,  0, 2, 100,enemy, 0x080  //GN_CRAZYWEED_ATK
 
this worked for me to enable crazy weed in pre-renewal, best regards to Happy for helping me with this
 

You have to change the pre-re/skill_db.txt:
 
-2483,11,6,2,0,0x3,4,10,1,yes,0,0x2000,0,weapon,0,  GN_CRAZYWEED,Crazy Weed
-2484,0,6,2,2,0x2,3,10,1,no,0,0x2000,0,weapon,0,  GN_CRAZYWEED_ATK,Crazy Weed Attack
+2483,11,6,2,0,0x3,4,10,1,yes,0,0,0,none,0,  GN_CRAZYWEED,Crazy Weed
+2484,0,6,2,2,0,0,10,1,no,0,0,0,weapon,0,  GN_CRAZYWEED_ATK,Crazy Weed Attack
 
and the pre-re/skill_unit_db.txt :
+2484,0x86,   ,  0, 2, 100,enemy, 0x080  //GN_CRAZYWEED_ATK
 
this worked for me to enable crazy weed in pre-renewal, best regards to Happy for helping me with this
 

This issue by design. After warp server forgot any npc related things.
Probably need change this. Need talk with other devs. Reset happend in clif_parse_LoadEndAck.
Or better some one create bug on github bug tracker?

The issue is the reload of the npc after a warp, a possible workaround is this:
FishPond, 63, 46, 6 script WarpTest 555,{ mes "I Will warp you!"; close2; charTeleported = 1; warp "FishPond", 64, 42; end; OnPCLoadMapEvent: if( !charTeleported ) end; charTeleported = 0; mes "So what happens here?"; switch(select("Something:Something else")) { case 1: mes "And now?"; close; break; case 2: mes "Menu option 2"; close; break; } end; OnInit: setmapflag "FishPond", mf_loadevent; end;}

yup...but I stop it for the moment..I need to gather more info in kRO..sadly my chars got wiped out so I need to create again...