How to create the effect to remove the expense of ninja stones?

[Tdi123]

Just like the queen bee card that nullifies the spending of gems, I wanted to create the effect to nullify the spending of ninja stones.

Thank you in advance for your help!

[mR L]

https://github.com/rathena/rathena/blob/master/db/pre-re/skill_db.yml

 

#     ItemCost:               Item required to cast. (Default: 0)
#       - Item                Item name.
#         Amount              Item amount.
#         Level               Skill level. Makes the skill item check become level dependent if supplied. (Default: applies to all levels)

 

[Tdi123]

On 10/3/2021 at 3:41 PM, mR L said:

https://github.com/rathena/rathena/blob/master/db/pre-re/skill_db.yml

 

#     ItemCost:               Item required to cast. (Default: 0)
#       - Item                Item name.
#         Amount              Item amount.
#         Level               Skill level. Makes the skill item check become level dependent if supplied. (Default: applies to all levels)

 

I still don't know how to make this type of modification, could you help me?

 

I am wanting to add a bonus to the queen bee card to nullify the consumption of ninja stones as well.
Who can help me, thank you in advance!