so in the sever i pay you get keys for killing mobs and i found out it blocks you from dropping it for 10mins after dropping so i want a timer for them 10mins everytime i drop it
I understand. This is out of scope for the timers i provide on Modrinth. Those all run server-side (needed to be on the server or world), not client-side
Not really difficult, but very specific usecase that probably only very few people would use. Also you seems to use forge, which is currently dying inside the modding scene so it will be hard to find any devs that do it for you