I'm looking to add nbt to an item that's inside a dropper. For example: there's a wooden sword in the middle slot. First you add +10 Damage and +1 Attack speed to it. Then you add Fire Aspect II on it. And last you add a tag "Level3" and lore saying "Wildfire" to it.
I haven't done this before so I'm going to need a lot of explanation.
I had a question a lot like this one, but it's not for 1.17 and I can't get it to work.