[@akje]

Many biological poisons are capable of remaining intact for many many years. Furthermore, plants do not tend to rot while they are still alive. So I'm worried about the sheer speed at which this aura functions. If you could cause vines to rot in moments, then logically speaking, metal you touch will rust in seconds. Clothes will fall apart in a matter of minutes, unless they're made of gold or something equally resistant to the touch of time.