Ive got a list of things that I think will help you build the deck, and which have a very good chance of inclusion
Having journeyed across multiple multiverses and even other properties such as Lord of the Rings or Final Fantasy, MTG is still holding strong with brilliant creativity and amazing mechanics
At this point, its safe to say that Magic: The Gatherings Final Fantasy set was an overwhelming success
Given that Eriettes passive just requires auras to be on the battlefield, you dont need to attack, so you can either go the Voltron route and attack or just sit back and relax while you slowly drain your opponents
Infinity Elemental / Animate Library I have regularly referred to creatures that kill an opponent in a single hit as Player Killers or PKs for short
Phenomenon Investigators believes in your aristocrats deck, but doubts that it is actually the right card for a Ninjas deck