BuildersWand has been updated with the following features:

• New Features:
  • Added a new mode- replace; what it basically does is that it replaces blocks with the specified set block from inventory(can be configured through the menu[Shift + Left-Click]).

Usage: Open the BuildersWand menu[Shift + Left-Click], change the mode to replace then use the replace-mode configure button which can be found in the same screen/menu to choose a block from inventory to use the mode.