Requirements

• Download and install AutoHotkey
• Create a new script in AutoHotkey and paste the following code:

e::
Send, {Shift down} ; Hold down Shift
Send, b ; Press b
Sleep, 4 ; Delay between key presses (in milliseconds)
Send, u ; Press u
Send, {Shift up} ; Release Shift
return

How to Use the Macro

1. Prepare Your Gems:

   • Place a gem in a tower, trap, or amplifier
   • Have a level 1 gem in your inventory

2. Hover Over the Placed Gem

3. Press "E" to duplicate and upgrade the gem

4. Repeat Until You Run Out of Mana

5. Sell the Gem & Repeat

How to Change the Key Binding

If you want to use a different key instead of "E", simply replace the first line (e::) with your desired key.

For example:

• Change to "F" → Replace e:: with f::
• Change to Mouse Button 4 → Replace e:: with XButton1::
• Change to Spacebar → Replace e:: with Space::

Find more key names in the AutoHotkey Key List.