Honestly for me the Shroud of Eden would be it, but probably a more efficient one.
I think another would one would involve empathy and allow you to truly experience the emotions of another exactly as though they were your own. Perhaps like reliving genetic memories except you are experiencing the perspective of someone else in the present time. The emphasis should be more on experiencing their actual thoughts and feelings about things than necessarily the world they're interacting with though.
How about a tablet of Eden, that allows you to record all your memories and can change the life of a human being by sending light rays that will desire the effect you wish as well as changing the fate with it
1. A Piece of Eden capable of evolving life forms on a genetic level, enhancing the capabilities of life forms.
2. A Piece of Eden, namely a Scythe, which can project infernal energy, boosts its user's physical strength and performance as well as imprint it's weidler consciousness with memories of incredible combat, strategic and warfare skills.
Armor of Eden, Gauntlets, Boots, Chestplate and Helmet. Each having their own unique properties entirely, but when all worn on the same person, with a Sword of Eden or an Apple, would intensely double or triple the strengths off all pieces. The boots could keep the wearer from losing pace and able to run or keep under physical stress without major or even minor fatigue. The chestplate would provide a psionic ward to protect from projectiles and make the wearer unable to be thrown off their feet or picked up, making them more or less as if they were a few tons, but to themselves feel and move normally. The Gauntlets would provide extreme combat capabilities...holding a weapon saves a memory of it and the next time the wearer picks up that weapon they are more or less a master of most styles of combat with it. The helmet increases the wearers eye sight greatly and let's them see far, and hear quiet or far away conversations, and increase the power of their voice, making those they speak to feel as though to serve or work for them.
Argus´s son wrote: How about a tablet of Eden, that allows you to record all your memories and can change the life of a human being by sending light rays that will desire the effect you wish as well as changing the fate with it
A tablet sounds amazing, but i think it´s better if the tablet would also contain the entire knowledge the isu have accumulated since THIER history began as well as being capable of controlling ALL pieces of eden and the life of Humans. However it´s original wielder has given the function that the tablet´s will only show it´s user what they can comprehent, meaning it´s power is limited to it´s wielder imagination.
A Shield of Eden would be interesting. The User would be able to block any Weapons or Attacks, maybe with the Exception of a few Pieces of Eden being able to break it. Another idea i had was the Key of Eden, a Key that can unlock any Door.
A lot of your suggestions sound just a bit too outlandish, to the point where they are magic rather than crazy advanced science. I dunno, I just like my speculations within the realms of possibility in the already established works. Something like a mask that made the wearer invisible might be good, I think.