Structure rewards have arrived. Now, you can create rewards that will paste a schematic file (.schematic or .schem). You can choose the location where it will be pasted (player location or lucky block location), wether or not existing blocks will be replaced and wether or not to place air blocks. In order to use them, you have to open the outcomes menu (using "/alb menu"), create a new outcome or edit an existing one and then select structure reward. There, you can select the schematic file.
Note: the file must be located at the "schematics" folder of NewAmazingLuckyBlocks. Note2: .schematic format is for Minecraft versions 1.8-1.12 and .schem format is for Minecraft versions 1.13 and above.