Resolving problem with pentagrams and wish contest of wills

[zot]

Originally Posted by TippetsTX

Or perhaps the 'battle of wills' is an abstraction for determining how secure the wizard's pentagram really is. If the demon wins, it means they found a flaw which makes the wizard vulnerable to attack.

The text indicates that the demon does not find a flaw in the pentagram because if the wizard dies, the pentagram still prevents the demon from smashing anything else: "Pentagrams will not protect the wizard in this battle of wills – though a good pentagram would prevent the demon from smashing anything else after he finished off the wizard!"