You can only control 1 face-up "Grandmaster of the Six Samurai". If you control a face-up "Six Samurai" monster, you can Special Summon this card (from your hand). When this card is destroyed by your opponent's card effect: Target 1 "Six Samurai" monster in your Graveyard; add that target to your hand.
Retrieves a Six Samurai monster from your graveyard.
Low stats compared to other monsters his level.
Must be destroyed by card effect to activate recovery effect.
Although Grandmaster doesnt really do much on his own, he is still an important part of the Six Samurai strategy. Because you can special summon him with ease he could help you swarm the field with Six Samurais, Leveraging into Great Shogun Shien and you other support cards.
You can have any of these monsters on the field so that you can special summon Grandmaster of the Six Samurai.
You can special summon Grandmaster of the Six Samurai and with 2 Six Samurai monsters on the field, you can special summon Great Shogun Shien.
These cards are to support the Six Samurai's strategy of swarming the field with monsters. Swiftstrike Armor can be a little slow, but it can potentially let you get an extra summon during your turns, allowing you to get 2 monsters out on the field. It can also be used with Reload since all of the monsters you get after using Reload can be special summoned with Swifstrike Armor. Cunning of the Six Samurai is used to let your Six Samurai monster dodge enemy effects.
Cyber Dragon is scarier than this card. You don't need anything to combo it and you can use Cyber Dragon with any deck. Not sure what you don't understand about why that card is good. What next, Cyber Twin Dragon isn't a good card too? Please.