There's another secret weapon in Roblox's Islands/Skyblock, and it is called the Vamp Bow. This is the second weapon that requires a blueprint drop, that can be found from certain enemies in the game. This is an incredibly rare drop, so you will need to slay a ton of monsters, or you will need to pay a whole lot of money to get one.
Vamp Bow Guide
To start off the hunt for this weapon, we will first need to obtain the blueprint. If you're a high roller, then you can go out and buy one, but expect to pay a whole lot of money in the early days of this being released. For those of us that aren't extremely rich, we're going to have to find the blueprint ourselves. First thing to do is head to the Wizard Island. You will need to kill Slime to get a Buffalkor Key, then kill Buffalkor to get the Wizard Island key. Slay a bunch of Wizards, and you will eventually get the Desert Island Key which leads to the new Desert Island.
Now that you have the key, head over to the Desert Island! Run around the island and you will find an area that spawns a bunch of mean looking scorpions. Using a spellbook is going to be your best bet, so you can stay further away from them. This is your life now until you find the blueprint! The drop is incredibly rare, and if you get one you might want to consider selling it, because it's worth a whole lot of money.
When you find the blueprint and use it, you will be able to craft Vamp Bows! These require 1 Artifact Bow and 1 Ruby Skorp Stinger. You will have hopefully gotten the stingers while you were out farming for the blueprint. The Artifact Bow requires 3 Ancient Slime String and 1 Hardened Bow Limb to craft. Ancient Slime String is a rare drop from Slimes, and you can craft the Hardened Bow Limb for 300 Maple Wood!