Stealing, Mugging, and Scanning

[KasperKalamity]

i'm working on something where you don't get items normally, you either have to steal them from enemies, or wait until the end of battle to get them as loot. i want to add an element of luck, without having to give away the store. if you can steal a potion or two during battle, then logically you wouldn't get another one from the enemy after you kill them because you already stole it.