If you already know how to make an object catch on fire, then what you're asking for is as simple as applying a "trigger" to the enchantment you place on an object. But be careful, fire is dangerous and often unpredictable.
I wouldn't say that there is any way to make an object literally catch on fire via magic. Or a person that touches said object.
I personally think it would be easier to cast at the person directly, so that whenever they do steal, something bad happens. If you don't know the person who is doing it, I would make something like a spell tag and place it among the objects that you desire to guard. And amulet, or even just some dried herbs or stones would work.
Re: Burning spell! By: kts Moderator / Adept Oct 13, 2011
Post # 10
A stern reminder to all members to be cautious about those offering help in return for money or a monetary fee. It is not wise to give out personal information to those you meet over the internet. If you are ever offered such assistance please save all emails and alert a moderator about the situation.