Getting the most persistent spells(3.5)

[JaronK]

Cost, though, is not infinite (unless you're using infinite loops for money, but that's not allowed by the OP).  I don't think an Artificer can afford to persist 40+ spells per day for very long.

JaronK

[LargePrime]

Granted, the artificer turns gold into magic.

But one need not infinite gold loops, simply income to offset expenses.

Given; ~13 encounters per level, and 4 encounters a day, one only needs ~<4 days of persisted magic per level. 
Not that expensive.

But if we are not talking playing this game, then the "Archivist/Binder/Tainted Sorcerer" is much more capable.