Use "Reinforcement of the Army" or "The Warrior Returning Alive" (whichever is appropriate) to add "Junk Synchron" to your hand, then Summon it, Special Summon a Level 2 monster, then Synchro Summon this card.
In a "Junk Synchron" Deck, Summon "Junk Synchron" and then Special Summon a Level 2 monster from your Graveyard. Then Synchro Summon this card and activate its effect to Special Summon another "Junk Synchron" from your hand. You now have a Level 5 monster and a Level 3 Tuner on your field, ready to Synchro Summon a Level 8 monster, all with just one Normal Summon.
You can use this card and the Special Summoned "Junk Synchron" to Synchro Summon "Junk Destroyer" and destroy a card in the field.
You can Tribute "Junk Destroyer" to Special Summon "Turret Warrior" to give it a 3800 ATK.
If you Special Summon another "X-Saber" monster from your hand, you will be able to Special Summon "XX-Saber Faultroll" from your hand with its effect.
You can then bring back the Tuner used to Summon this card in order to Summon a Level 7, 8 or 9 Synchro Monster depending whether you used "X-Saber Airbellum" or "X-Saber Pashuul" to Summon this card.
This card can be splashed into non-"X-Saber" Decks. In a DARK Deck, for instance, you can Special Summon "Armageddon Knight" or "Dark Grepher" and use their effects to mill your Deck.
Synchro Summon this card while you have a "Synchro Magnet" in your hand, allowing you to Special Summon both a Level 4 Warrior-Type monster and a Tuner in the same turn.
You can Summon this card in one turn by Normal Summoning "Marauding Captain": use its effect to Special Summon a Level 2 Tuner such as "X-Saber Pashuul".
You use this card in a "Six Samurai" Deck, first Summon this card using a "Six Samurai" monster as a Synchro Material, then use it's effect to Special Summon a "Six Samurai" monster, finally use "De-Synchro" to re-summon the "Six Samurai" you used to use their effects and/or summon "Great Shogun Shien".
Alternatively you can use the two "Six Samurai" monsters and the Tuner to Synchro Summon a stronger monster like "Colossal Fighter".
You can instantly Summon this card with "Deep Sea Diva" and if you have a "Neo-Spacian Aqua Dolphin" in your hand you can Special Summon it. This allows you to destroy almost any monster in your opponent's hand, as long as it has 2100 ATK or less.
This card is useful in a "Heroic" deck, as almost all the Main Deck monsters (bar "Heroic Challenger - War Hammer") are Level Four and lower Warriors, so it can easily summon virtually any of them. This can be helpful if you want to set up for another Synchro Summon or Xyz Summon one of the "Heroic Champions".