Instead of asking for help in the sub itself to possibly derail its purpose you should instead make a post in the Advice section of the forums with a link back to here that way the true comments on the sub are kept here but the advice on the growth of the sub stay hidden. Go to Comment
This item is, to me, kind of a mixed bag. There are basically three parts to it, and I don't think that they entirely go together. What I mean is this:
First, the idea that the gods basically pay each other money in exchange for refusals and perhaps insults or whatever, a sort of divine recompense, I guess, is really neat. I love the idea that the god of death has a responsibility, and if he doesn't want to do it, he has to pay a price to another god, and also that the money used for such payments can end up in the hands of mortals. That's a cool idea.
Then you say that he pays the two coins which were used to get into the afterlife. The idea that the coins paid to get into the afterlife become magical is also a neat idea. But I feel that it lacks a certain degree of symbolism with the previous bit. If there's a connection between the money and why the death god is supposed to release the soul, then it makes sense why he's returning that specific money. But as is, it comes across as just being the money that he happens to have at hand, coincidentally the same amount, and that sort of robs the item of this interesting bit of background.
Finally, the actual thing that the item does. Sending people back in time to avoid their own death is an interesting idea, if a problematic one in an actual game scenario, I suspect. But again, I think it kind of lacks resonance with the rest of the bits. I don't think that dying and time share an inherent connection, so I think that this comes across as kind of a forced way to bring someone back to life.
In the end, I think that you have three good ideas here that are all kind of dangling off of each other, rather than firmly connected. Go to Comment
Magical Fiends: When a mage or wizard casts a spell and draws more energy than s/he needs Magical Fiends are drawn to that spot and they feed of the extra magic as long as they can. When someone's magic is being fed off of they can't cast spells as well and they feel weaker. The only way to remove a magicial fiend is for it to be drawn away by someone else's power or to go to the very spot you first cast the spell and kill them