Conceal Magic

You hide and temporally disable any Enchantment on any item you cast this spell on.

Also, you can set simple trigger that will permanently dispel this spell. (ex: if this item is submerged in water, put in fire, wielder kills someone who is friendly towards him etc.)

This spells can be detected by Identify and Detect Magic spells but will not reveal the trigger.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher you can put the additional trigger to the spell for every level above 5th.