Indeed I was using the rings of wizardry cap for 4th level spells as a guideline. I just dropped the name so people didnt think I was randomly pulling 4th and lower out of my hat. However another nice benefit that the rings themselves allow would be items that effect more than 1 level of spells as again the ring of wizardry demonstrates. This solves the initial prblems of
1) potential gamebreaking issues by free use of high level magic
2) Arbitrarily putting the ability outside of the reach of the player
3) Limitations on the use of proposed magic item by providing a limited area of use ( it uses a ring slot... and rings are expensive )
One outside the box idea would be to allow the DM to horribly throw out the DMG magic guidelines. Here is what I would allow a sorceror who really wanted a more "powerful" item. I would let them forge the ring and sacrifice personal spell slots to put 2 spell slots available on the ring for every 1 sacrificed. I call this the Sauron theory of magic item crafting. Makes the sorceror a mad dog until the ring is lost. Anyway just had to be silly so back to the point at hand.....
1) potential gamebreaking issues by free use of high level magic
2) Arbitrarily putting the ability outside of the reach of the player
3) Limitations on the use of proposed magic item by providing a limited area of use ( it uses a ring slot... and rings are expensive )
One outside the box idea would be to allow the DM to horribly throw out the DMG magic guidelines. Here is what I would allow a sorceror who really wanted a more "powerful" item. I would let them forge the ring and sacrifice personal spell slots to put 2 spell slots available on the ring for every 1 sacrificed. I call this the Sauron theory of magic item crafting. Makes the sorceror a mad dog until the ring is lost. Anyway just had to be silly so back to the point at hand.....