Summary: Let’s start with one card perhaps nobody knew about.
Ninja Master Hanzo
Race – Betrayer
Affiliation – Yaksha
– Add 1 to its attack when target includes Earth creature.
– While on non-Earth field, the allied creatures with the same affiliation as Ninja Master gains intercept.
– While Ninja Master is adjacent to the allied Yaksha creature who is on Earth field, the Ninja Master gains invisibility.
Comment: The abilities seem to have a few restrictions. The biggest challenge with Ninja Deck in my experience were two things. One lack of fire power to kill enemy. Second, the lack of mana. As this is Ultrarare and only can be one in a deck, I had hoped it had ability to decrease summoning cost of other Ninja by 1. 3 summoning cost and 2 summoning cost is one of the biggest difference. However, invisibility is very strong ability so I see a point of Sony being very careful about it. I would definitely try making Ninja Deck again using her.