So... I was wondering if anybody knows if it's possible to create a loot table for a block that only drops a certain item if a specific tool is used on it. I know that there is a condition for specific enchantments, but that's not really useful. I'm planning on making a custom tool that when used to break cobblestone will make the cobble drop gravel.

If you need any more information I'll be happy to give it to you lol. I would love to know if this is possible or not, thanks!