Playtester

Hmm, not sure, but you only need one | between the flags.
Try:
bonus5 bAutoSpellWhenHit,"AL_PNEUMA",1,150,BF_SHORT|BF_LONG|BF_WEAPON|BF_MISC|BF_NORMAL|BF_SKILL,0;  

Hmm, I think easiest would be to go to status.c, find function status_calc_matk and change:
cap_value(matk,0,USHRT_MAX); To:
cap_value(matk,0,10000); (It appears twice in the function and both parts need to be modified.)

That database is heavily messed up.
1,2,3,4,5,6 Someone replaced the official values with 1, 2, 3, 4, 5, 6.
// ID,AegisName,Name,Type,Buy,Sell,Weight,ATK,DEF,Range,Slots,Job,Class,Gender,Loc,wLV,eLV[:maxLevel],Refineable,View,{ Script },{ OnEquip_Script },{ OnUnequip_Script } The cost of the weapon is 1z, but they sell for 2z. They only weight 0.3. They give only 4 ATK. They give 5 DEF. And they have a range of 6.
Get the official database here:
https://raw.githubusercontent.com/rathena/rathena/master/db/pre-re/item_db.txt

exp.conf // Use the contents of db/statpoint.txt when doing a stats reset and leveling up? (Note 1) // If no, an equation will be used which preserves statpoints earned/lost // through external means (ie: stat point buyers/sellers) use_statpoint_table: yes https://github.com/rathena/rathena/blob/master/db/re/statpoint.txt
Should actually be 6058 at level 255 by default? And 52 more stat points when rebirthed.
In pre-renewal it would be 7237 stat point at level 255 when rebirthed. 7316 must be a server customization.

As said, weapons having Matk is a renewal thing. In pre-renewal this doesn't exist. All wands just gave Matk+15%.

C'mon it's a normal math formula you don't need me to write that down.
if(sd) //Player hitrate += sstatus->hit - flee; else //Monster hitrate += sstatus->hit - flee/2;  

Maybe the server is running out of RAM.

Nope, you are wrong. I have a Royal Guard with 19474 MaxHP and with Matyr's Reckoning active I always deal 1752 damage. Bare-handed, with spear and with racial damage bonus cards. Always 1752 damage. It isn't affected by weapons or cards on official servers.

It isn't enough to connect the status change with the skill, you also have to completely recode Land Protector.

Same mob_id. That's why only Andre will attack you when you tank Andre. Pierre and Deniro just don't care.

Should be fairly easy.
First of all, check the db/import folder. After compiling, you should have a file named job_exp.txt there which is a copy of this file:
https://github.com/rathena/rathena/blob/master/db/import-tmpl/job_exp.txt
Now you can really just follow the instruction, but in short you want to uncomment the appropriate line (base exp) and replace x with the job ID of Taekwon (4046). Then just put the max level you want.
As long as you don't increase the level above 175, no other changes should be required.

Doesn't happen on default, maybe you have an item equipped that gives negative crit?

So if the player is a super player he should be able to chain combos however he wants?
If guess you can get group_id via:
int pc_get_group_id(struct map_session_data *sd); So for example... uh...
case MO_CHAINCOMBO: if(!sc) return false; if(sc->data[SC_BLADESTOP]) break; if(sc->data[SC_COMBO] && (pc_get_group_id(sd) > 0 || sc->data[SC_COMBO]->val1 == MO_TRIPLEATTACK)) break; return false; Like this maybe?

It's not a knockback, the server just send you the correct coordinates so there is no position lag.
If you rather want position lag you have to stop the client from sending fixpos packets when using a skill. This can be done by calling "unit_stop_walking" without the "1" bitset.
For example here (unit.c):
if(!ud->state.running) // Need TK_RUN or WUGDASH handler to be done before that, see bugreport:6026 unit_stop_walking(src, 1); // Even though this is not how official works but this will do the trick. bugreport:6829 And here:
} unit_stop_walking(src,1); // SC_MAGICPOWER needs to switch states at start of cast skill_toggle_magicpower(src, skill_id); Change the "1" to "0". Might already have the effect you are looking for.

0x42 + 0x08 = 0x4A

If you want to use pre-renewal you have to open renewal.h and uncomment the PRERE define.
https://github.com/rathena/rathena/blob/master/src/config/renewal.h
#define PRERE Don't forgot to recompile after that.

It needs two parameters, though...
Read the documentation:
bonus2 bHPLossRate,n,t; Lose n HP every t milliseconds https://github.com/rathena/rathena/blob/master/doc/item_bonus.txt
Do you even want a regular HP loss? From what I understand you just want this:
bonus bMaxHP,400-50*(JobLevel/10);  

You probably did some modifications to the source or DB that caused this because I doubt it's like this in default rAthena. At least the last time I tested Deluge and Land Protector it looked just fine.
What's your skill_unit_db?
285,0x9a, , 3, 0, -1,all, 0xA010 //SA_VOLCANO 286,0x9b, , 3, 0, -1,all, 0xA010 //SA_DELUGE 287,0x9c, , 3, 0, -1,all, 0xA010 //SA_VIOLENTGALE 288,0x9d, , 3:3:4:4:5,0, -1,all, 0xA010 //SA_LANDPROTECTOR  

My mistake.
 
battle.c
if( ((d_tbl && check_distance_bl(target, d_tbl, sc->data[SC_DEVOTION]->val3)) || e_tbl) && damage > 0 && skill_id != PA_PRESSURE && skill_id != CR_REFLECTSHIELD ) damage = 0; skill.c
if (tsc && skill_id != PA_PRESSURE && skill_id != HW_GRAVITATION && skill_id != NPC_EVILLAND) {

They are all independent already. Depending on where you stand only some meteors might hit you and others not.

You have to put the code further down at the end of function "battle_calc_weapon_attack".
 
Probably below "wd = battle_calc_weapon_final_atk_modifiers(wd, src, target, skill_id, skill_lv);".
 
Like...
if(skill_id == MC_MAMMONITE) wd.damage = cap_value(wd.damage, INT_MIN, 80000);

Does he have a ranged weapon equipped?

Well first of all that rate 300 is pretty high. That's 300% more EXP each kill. That is quadruple EXP the first kill! Very abusable. I'd rather put something like 10-30.
 
Second, monsters level up to "max base level" of the PC they killed, so it depends what the max level is on your server.
 
You can change it by putting concrete number in pc.c:
if(battle_config.mobs_level_up && md->status.hp && (unsigned int)md->level < pc_maxbaselv(sd) && !md->guardian_data && !md->special_state.ai// Guardians/summons should not level. [Skotlex] ) { // monster level up [Valaris] clif_misceffect(&md->bl,0); md->level++; status_calc_mob(md, SCO_NONE); status_percent_heal(src,10,0); if( battle_config.show_mob_info&4 ) {// update name with new level clif_charnameack(0, &md->bl); } } Just replace "pc_maxbaselv(sd)" with whatever max level you want.

} else if( !battle_check_range(src, target, range) ) return 0; // Arrow-path check failed. Just change to that to:
} else if( !battle_check_range(src, target, range+1) ) return 0; // Arrow-path check failed. For now.
 
At least then you only change it in that one specific case instead of changing a general range function that's used everywhere.
 
Yes, it's not safe, it gives hackers one more skill range than other players, but I can't look into a better fix because the bug doesn't appear for me locally and nobody else that has this bug could look into why it even gets to that code part.

How about this one:
bonus2 bSubSkill,sk,n; Reduces n% damage received from skill sk