Trial Chamber's Vaults

The Trial Chamber's Vaults only drop loot once per player. The problem is that this doesn't work when more than 128 players use the same one. I don't think this should be fixed but rather the vault should be usable infinite times by every player but with some cost or condition. Maybe using some renewable item like amethyst (tho that's too cheap) or having to charge it again using XP from killing mobs close to it or maybe using a lightning rod to charge it with lightning or just waiting a long time or something.

A problem that Minecraft has is that grinding isn't really fun and the more you grind, the harder it is to find more ores, which makes players wait until they have mending instead of grind. Also, some ores like Diamonds are not renewable. This would solve that by being able to use the Vaults to grind with a fun challenge and at the same time it would still be good to grind since being able to use the Vaults again would take time or would be expensive.