Sakurada

At the end of your spawn script that you keep in your NPC folder...
 
prontera,0,0,0,0 boss_monster Detardeurus 1719,1,10800000,600,000,0,1,0
prontera,0,0,0,0 boss_monster Detardeurus 1719,1,10800000,600,000,0,2,0
prontera,0,0,0,0 boss_monster Detardeurus 1719,1,10800000,600,000,0,3,0
 
 
you can add 2 more collumns, size and ai that arent normally there
I think 3 is large 

status.c
change this
set_sc( GN_CARTBOOST , SC_GN_CARTBOOST , EFST_GN_CARTBOOST , SCB_SPEED|SCB_WATK ); add scb_watk
 
find this
if(sc->data[SC_WATKFOOD]) watk += sc->data[SC_WATKFOOD]->val1; if(sc->data[SC_VOLCANO]) watk += sc->data[SC_VOLCANO]->val2; if(sc->data[SC_MERC_ATKUP]) watk += sc->data[SC_MERC_ATKUP]->val2; add a new one 
if(sc->data[SC_GN_CARTBOOST]) watk += sc->data[SC_GN_CARTBOOST]->val4;  
find this
case SC_GN_CARTBOOST: if( val1 < 3 ) val2 = 50; else if( val1 > 2 && val1 < 5 ) val2 = 75; else val2 = 100; break; add val4= 50; at the top
like so
case SC_GN_CARTBOOST: val4 = 50; // Watk increase if( val1 < 3 ) val2 = 50; else if( val1 > 2 && val1 < 5 ) val2 = 75; else val2 = 100; break;  
 
 
That should do it unless you want batk if that matters just change scb_watk to scb_batk and change watk in second part to batk , might have  to move it to other section with others tho 
 
recompile
 
 
 

I dont know how to make a patch but ive included my src + mapflag conf at the bottom of the post, ill include instructions on how to add them yourself though. And how to adjust the rates will be first
drop rates - mob.c
find this
#ifdef RENEWAL_DROP if( drop_modifier != 100 ) { drop_rate = apply_rate(drop_rate, drop_modifier); if( drop_rate < 1 ) drop_rate = 1; } #endif if(map_getmapflag(m, MF_DROPRATE300)) drop_rate = (int)( (drop_rate * 300) / 100. ); if(map_getmapflag(m, MF_DROPRATE50)) drop_rate = (int)( (drop_rate * 30) / 100. ); // attempt to drop the item if (rnd() % 10000 >= drop_rate) continue; if( mvp_sd && it->type == IT_PETEGG ) { pet_create_egg(mvp_sd, md->db->dropitem[i].nameid); continue; insert
if(map_getmapflag(m, MF_DROPRATE300)) drop_rate = (int)( (drop_rate * 300) / 100. ); if(map_getmapflag(m, MF_DROPRATE50)) drop_rate = (int)( (drop_rate * 90) / 100. ); above the comment
//attempt to drop the item
(drop_rate * 300) = +200%? 100 would be normal 
and
 (drop_rate * 30) = 30% of normal drop rate
these are the only numbers you need to change
I havnt tested with gum but it should be normal
 
next NPC.c
find this
case MF_BATTLEGROUND: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) < 1) args.flag_val = 1; // Default value map_setmapflag_sub(m, MF_BATTLEGROUND, true, &args); } else map_setmapflag(m, MF_BATTLEGROUND, false); break; case MF_DROPRATE50: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) == 1) map_setmapflag(m, MF_DROPRATE50, state); else map_setmapflag(m, MF_DROPRATE50, 100); } else map_setmapflag(m, MF_DROPRATE50, 100); break; case MF_DROPRATE300: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) == 1) map_setmapflag(m, MF_DROPRATE300, state); else map_setmapflag(m, MF_DROPRATE300, 100); } else map_setmapflag(m, MF_DROPRATE300, 100); break; case MF_NOCOMMAND: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) < 1) args.flag_val = 100; // No level specified, block everyone. map_setmapflag_sub(m, MF_NOCOMMAND, true, &args); } else map_setmapflag(m, MF_NOCOMMAND, false); break; insert
case MF_DROPRATE50: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) == 1) map_setmapflag(m, MF_DROPRATE50, state); else map_setmapflag(m, MF_DROPRATE50, 100); } else map_setmapflag(m, MF_DROPRATE50, 100); break; case MF_DROPRATE300: if (state) { union u_mapflag_args args = {}; if (sscanf(w4, "%11d", &args.flag_val) == 1) map_setmapflag(m, MF_DROPRATE300, state); else map_setmapflag(m, MF_DROPRATE300, 100); } else map_setmapflag(m, MF_DROPRATE300, 100); break; under MF_BATTLEGROUND(doesnt matter)
 
NEXT - MAP.H
find
MF_NOEXP, MF_PRIVATEAIRSHIP_SOURCE, MF_PRIVATEAIRSHIP_DESTINATION, MF_SKILL_DURATION, MF_DROPRATE50, MF_DROPRATE300, MF_MAX add MF_DROPRATE50, and MF_DROPRATE300, 
commas matter 
 
Last in your SRC find SCRIPT_CONSTANTS.H
and add our 2 new map flags like above
export_constant(MF_NOEXP); export_constant(MF_PRIVATEAIRSHIP_SOURCE); export_constant(MF_PRIVATEAIRSHIP_DESTINATION); export_constant(MF_DROPRATE50); export_constant(MF_DROPRATE300); export_constant(MF_SKILL_DURATION);  
recompile i hope it works
 
 
afterwards you also need to make changes in your NPC folder 
scripts_mapflags
npc: npc/mapflag/skill_duration.txt npc: npc/mapflag/droprate.txt then in the file it should look like this
prontera mapflag droprate50 geffen mapflag droprate300  
just merge my files with yours if you want and please let me know if you have problems
 
droprate.rar

Thats a good question
why not just use this
bonus bCriticalDef,n;                    Decreases Chance of being hit by critical by n%