When Shiranui Squire is Normal Summoned, you can Special Summon 1 “Shiranui Spectralsword” monster from your hand or Deck. If you use this effect, Squire will prevent you from Special Summoning monsters for the rest of the turn, except Zombie monsters, which is why the only non-zombie monster in the Deck is Dragonecro Nethersoul Dragon, a Fusion Monster that you are mostly going to Summon during your opponent’s turn.
Once per turn, during your Main Phase, Shiranui Squiresaga allows you to banish 1 face-up monster you control or in your Graveyard and then, depending on what the monster was before it was banished, you can apply the following effects in sequence:
Shiranui Squiresaga gives you monster removal, back row removal, and a permanent ATK boost while also triggering the effects of Squire, Spiritmaster, and Solitaire.
Note that you can trigger any of these effects by banishing Squire, Spiritmaster, or Solitaire directly from your Deck via Gold Sarcophagus.
Now, in order to destroy a monster with Squiresaga’s effect, you do have to banish a Synchro Monster, which may sound like a waste, until you realize that Squiresaga can banish itself and you only need Shiranui Squire in order to bring it out. I’m not saying you are always going to banish Squiresaga via its own effect, I’m just saying that, since it’s a Synchro FIRE Zombie, if you did, you would get a lot of value from it.
Since you can only Special Summon Shiranui Squiresaga once per turn if you Synchro Summon it and you banish it via its own effect, you are not going to be able to Special Summon it right away via Solitaire’s effect, but you can still do it on your next turn.
When Shiranui Spiritmaster is Normal Summoned, you can Special Summon 1 “Shiranui” monster from your hand or Graveyard (except Shiranui Spiritmaster), but banish it when it leaves the field.
Alternatively, if you lead with Gold Sarcophagus, you can:
You are not always going to be able to do this, but learning what your cards can do and what certain combinations can lead to is very important.
Necro Fusion allows you to Fusion Summon 1 Fusion Monster from your Extra Deck by banishing Fusion Materials listed on it from your GY. Since the Fusion Materials are banished face-down, Necro Fusion will not trigger the effects of your “Shiranui” monsters, but it will still give you a 3000 ATK monster that can easily close out the Duel.
Shiranui Squire prevents you from Summoning Dragonecro after you Normal Summon it, so I decided to run Necro Fusion instead of Dragon's Mirror. You activate it during your opponent's turn to set up an OTK, or for protection; the fact that it doesn't have synergy with the archetype doesn't really matter since it's meant to close out the game on the next turn. Also Special Summoning it during the Battle Phase puts your opponent in an awkard spot because, if they attack it, their monster's ATK becomes 0. Necro Fusion really helps out in the early turns, where Shiranui struggles.
If you turn any Level 4 Shiranui into a Level 8, you can Synchro Summon Shiranui Shogunsaga with ease.
The White Dragon of Legend
Ancient Gear Awakening
Return of the Red-Eyes
Full Metal Desperado
Master of Chaos