Birth by Sleep > Melding
Melding is a process similar to Synthesis, but slightly different. Basically, it allows you to fuse two existing Commands together to create new ones. Furthermore, adding Crystals to the mix will equip different Abilities to the resulting Commands. For a complete list of Abilities, refer to the Abilities page under the Birth by Sleep drop-down menu.
All available combinations are organized into three categories: Attack Commands, Magic Commands, and Other Commands. Under each Command listed are all of the possible combinations of other Commands that can be Melded to result in the Command listed. Varying results of including different Crystals to each possible combination are also provided.