The Raging Poisoning

I thought i'd finally found somebody who could stand up to my tests of mercantile powers, but apparently I was wrong. It's kind of the part of one of the gameplay issues I'm casting draw midges instant summons on the flaming raging poisoning sort of doom. If you touch an object whose longest dimensions in six feet or less it leaves an invisible mark on a surface and invisibly inscribes the name of the item on a sapphire he uses as the material component. He can use the action to speak an item's name and crush the sapphire and summon it to me instantly.