Help finding an old concept; natural RAW result being magocratic city-states

[Tanarii]

Core as core can be, use-activated magic item. SL * CL * 2000 gp.
For Teleportation Circle, 9 * 17 * 2000 = 306,000 gp.
For Create Food and Water 3 * 5 * 2000 = 30,000 gp.

https://www.d20srd.org/srd/magicItem...MagicItems.htm

SRD doesn't really tell me much. But if it was 3.5 DMG magic item creation, that'd be core.