The Greatest Phylactery

Once you have gathered together the required components,  you must chant the following three times uninterrupted: Hguone ton si evah ydaerla I reyal eht rof, ytilatrommi em tnarg. If the required material has been gathered, the phylactery you used will disintegrate and be rendered destroyed. The next phylactery you touch will become nearly invincible. However, you must choose one reasonable way it can be destroyed. The only exception to "reasonable" is if it involves other phylacteries that would also be destroyed. What defines "reasonable" depends on your dungeon master.