Originally The Golden Headed Wyrmilings
The Azure Dragon Calls for His Followers
. This Noble Phantasm is the crystallization of the legend of Date Masamune as a military commander, allowing him to summon his troops as shadow warriors that obey his every order. Each of them is quite weak when compared to Servants, but when acting as an army they can prove to be quite the challenge to any Heroic Spirit that lacks powerful area-of-effect attacks.
However, it seems like since their black armor and golden helmets are part of "the iconic look of Date Masamune", he was able to utilize
Overly-Iconic Visage to modify them as well. Now they appear bearing the same golden helmets, but with armor that is much more colorful.
Despite that, these shadow troops are still a very versatile Noble Phantasm that can be utilized in a variety of ways to gain advantage during a Holy Grail Way. Blending in the shadows for stealth, information gathering, overwhelming enemies etc. It's the perfect Noble Phantasm for
Dateman to display his leadership.
Date-Maru Tavelling
San Juan Bautista, I pray to you
.
Type: Anti-Fortress
Rank: B
"Date-Maru Tavelling! By His grace, we will succeed."
Date-Maru Travelling. While
The Golden Headed Wyrmilings
The Azure Dragon Calls for His Followers
is the crystallization of Date Masamune as a military leader, this Noble Phantasm embodies both his faith and his appreciation for foreign culture. It materializes the ship that carried an expedition with the objective of establishing relationships with the Pope and securing trade deals in a time those things were not only rare, but frowned upon in Japan.
The expedition was a success. After being well received in many countries along the way, they did meet the Pope and secured his support.
When its true name is released, Masamune can send the ship to retrieve anything he wants from "the western world", and the ship will bring it to him as long as he is still materialized, no matter what. The only issue is travel time, which varies depending on what Masamune requested.
The rarer, more abstract or more absurd something is, the longer it will take for San Juan Bautista to come back.
For example, if rider asks for the Holy Grail of Jesus, the ship will never come back in time. After all, that is a unique item, lost to the ages, whose sole possessor is said to have ascended to Heaven with it.
If Rider asks for the latest issue of Batman, then the ship is probably going to return only a few hours later.
If he asked for a regular katana though, San Juan Bautista is still going to take a few hours, but it will come back empty. A Japanese sword is not something that can be acquired on "the western world".