Icewind Dale style Belt of Blur. On equip it adds 20% concealment as a supernatural effect (undispellable, not lost on rest). Removed on unequip.
Change the % by editing the BLUR variable on the item. Set BLUR_AGAINST = 1 for ranged attacks only, = 2 for melee only. 0 (default) = concealed to both types.
Warning: any supernatural concealment will be removed on unequip. So only use this option on one item type (except rings of course). If you have two, unequipping one removes the effect of both.
Use this however you want. Include it in your uploads if you want.
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone