Gold Luen [1] will be consumed first， and 10% of your level up runes will be cost for one draw a lottery  if you don't have one.

The packed 00_solo.tpfbdt has 1GB, so only the newly added image's dcx will be provided. Tutorial to unpack your own game to mod it will be updated later.
You can  download 00_solo.tpfbdt here(OneDrive) leave it in {your_mod_path}/menu/hi . 00_solo.tpfbdt is used to display a image. it's ok to run the mod without 00_solo.tpfbdt.

Known issue: 

• Low probability of not dropping items(check 1.3's detail)
• the random generator may not random enough
  

proposal:

• let enemy drop golden rune 1 randomly
• make stats "discovery" has effect to the gacha
  

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version 1.2 or lower
Prize pool has basically every item in game. ids  form THE MASTER SPREADSHEET

Prize pool (0 - 8191):
awardItemLod id ; quantity ; category
200000 - 204460; 447 ; uniq weapon  
204470 - 235870; 3141; weapon
235880 - 237590; 172 ; spell
237600 - 243450; 586 ; armor
243460 - 260020; 1657; item
260030 - 261180; 116 ; tailman
261190 - 262090; 91  ; ash of war
262100 - 278660; 1657 ; item
278670 - 280280; 162 ; Starscourge Greatsword
280290 - 281910; 163 ; hand of Malenia

Code could be found on github

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version 1.3  
thanks to  Qiller and MinusBrute86

updates:

• Prize pool size goes to 16384, and shuffle the csv lines. 
• The previous no-drop problem is because  THE MASTER SPREADSHEET has some id with no item, this version read data from regulation.bin's EquipParamXXX to get data with item name. But still may drop nothing because some item has repeated ids, and i don't know which is efficacious.
• Weapon with affinities removed.
• Enhanced Weapon or ash removed.
  

Merge with other mod:
itemLotParam_map
newly added csvlines
newly added csvlines(average)


regulation.bin
tried to arrange according to genshin‘s, but 1.6% still too low. 
legendary (131*4/16384) ~= 3.2%
rare ((836*5)+80)/16384 ~= 26%
common ((836*7)+538)/16364 ~=38%
default (206*6)/16384 ~= 7.5%
commonly used material (tempFillerGoods & tempFillerWeapons) fill up the rest

regulation_average.bin
rename it to regulation.bin before you use
any item's drop rate should be 0.055% or 0.049%, but some item's id reapted for 2 times (0.098%) or more


Supporting
basically get nothing with sponsorship,none of my mods would be possible without ?serverName? discord's generous share
patreon.com/Lraty