Powder?

I recently got blue powder, how do I use it?

 

They are not yet released fully. Wait until they're done.

 

Btw this is the wrong section.

 

Pre-1.14, you could just put your weapon and powder into the crafting slot of your inventory to give it more power (e.g. green makes it do more damage [sharpness], red makes it ignite enemies [fire aspect], and blue increased knockback [well, knockback]); essentially, it was Wynn's version of enchanting. They're working on re-implementation (I'm assuming due to the recently-updated weapons system), but as it says in the description of the powder, they will return soon. The only actual problem is for new adventurers who get stuck on Creeper Infiltration or ToL because they can't find the powders they need, but if you ask older players, they usually have plenty (I have a stack of Red Powder I... I'll probably never use any of it) and will sell them to you at a reasonable price, or just give them to you if they're feeling generous.