Nine Magical Items That Have Not Yet Been Invented (CWH)

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If your wizard is interested in researching new magical items and is looking for an unusual project, he might consider one of the choices listed below. All of these items have been proposed by wizards over the years, but none has yet been successfully researched. The DM and the player must establish the exact effects for these items as well as the details of the research. Keep in mind that if the research was easy, some other wizard would surely have completed it by now
==1. Seeds of Wealth==
These are seeds that grow trees that bear gems instead of fruit
==2. Portable Bridge==
This is a bridge that can be folded up and carried in a pocket. When unfolded, the bridge can span a river or chasm without the use of pillars or other supports. The portable bridge is as strong as a bridge made of stone
==3. Iron Heart==
This is a mechanical heart capable of replacing a damaged or aging human heart. No surgery is required; the mechanical heart is merely placed on the recipient's chest and it is absorbed into his body. Presumably, the mechanical heart would increase the owner's endurance and resistance to disease
==4. Paper of Writing==
Any words that the user speaks or thinks will magically appear in writing on this paper
==5. Scope of Seeing==
This is a portable viewing scope with unlimited range. No physical barriers block the view of a person using the scope of seeing. The scope enables the user to observe the details of the sun, the moon, and distant worlds. It also allows the user to see completely through the earth to observe locations on the opposite side
==6. Liquid Iron==
When kept inside a container, this substance remains liquid. When poured from the container, the liquid turns to iron. Before the iron hardens, it can be formed into any number of useful items
==7. Cold Fire==
This type of fire looks the same as normal fire, but it generates no heat. Cold fire would be useful for torches in cramped quarters, and also would be a safe light source for homes, since there would be no danger of accidental fires.
==8. Dark Fire==
The antithesis of cold fire, dark fire generates heat the same as normal fire, but it produces no light. With flames as black as shadows, dark fire would be useful in making campfires for soldiers or other travelers who did not wish their location to be revealed by bright flames
==9. Mirror of Recall==
Staring into this device enables the user to recall with precise detail any book he has read or any sight or conversation he has ever experienced