Alicornutopia

Wellspring + Dragonbond according to my out-of-date dragonbonding spreadsheet: Storage, handling, and generation all become Arbitrarily Large; entanglement and perception may be positively affected as well.

Are wishcoins Dragonbondable? My intuition says no, because minting isn't substance-limited and specific coins aren't directly tied to a particular person who could become the Bonded, but the latter isn't quite explicitly spelled out.

If wishcoins were bondable then Sarion wouldn't have been so careful about using them up while Aianon and Ansharil were stuck in Origin.

You can't have a Dragonbond with a not-a-person.

How about enchanting? It uses "power from sky/earth/mind/heart¹"

¹Captain Planet!

I'm pretty sure also no. You don't have a finite amount of any of those available.

If a wizarding reservoir is a person and their magic is limited on their scale, is that wizarding reservoir eligible for a dragonbond?

(Also is there a worldbuilding thread I could be asking that question in? My quick check didn't turn one up.)

I don't think the reservoir is the right kind of person.

And I could be wrong but I don't think it counts as finite.

It sort of is in the sense that it does have an amount.