Conquest Reforged Paintbrush adds a creative paintbrush that allows the user to "copy" and "paste" the material of a block onto another block while maintaining it's variant and properties.
Primary click with a paintbrush to copy the targeted block's material to the paintbrush.
Hold "Left Ctrl" while selecting a material to select in strict mode. All painted blocks will be an exact copy.
Secondary click with a paintbrush to paint the selected material onto the targeted block. This attempts to find the same block variant in a material's conquest family.
Crouching will show the material that is currently selected on a paintbrush.
Version 1.1.0 also adds a paint knife that allows the user to raise and lower layered blocks with right and left click respectively.
Credit to Monsterfish_ for the paintbrush and paint knife textures.