this requieres that you have lava on 4. uppon pressing 4 it will select lava place it quickly and go back to 1. asuming ur sword is placed on slot one. the macro requieres however that you look at the ground when you press 4. (also bind this to 4)
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Download the program (Download) and go to the macro editor

press the button «Open file»

and select the downloaded file

assign a macro to a key and run the program
