How to resolve impossible ambiguity with commas? The Oxford comma doesn't help

Have there been any solutions proposed for the ambiguity in sentences such as the following?

The highlights of his global tour include encounters with Nelson Mandela, an 800-year-old demigod‹,› and a dildo collector.

The problem is that although the comma which I have identified using ‹brackets› makes it clear that Nelson Mandela is not a dildo collector, it fails to clarify whether or not he is an 800-year-old demigod. Context clues notwithstanding, the sentence is semantically ambiguous.

Is there a way to use punctuation to resolve the ambiguity? Or does the sentence have to be reworded?

Solution 1:

The ambiguities go away if you replace the commas with semicolons:

The highlights of his global tour include encounters with Nelson Mandela; an 800-year-old demigod; and a dildo collector.

This is because semicolons do not also have the potential for marking off a parenthetical comment in the same way that commas do.

Solution 2:

You can always rephrase, of course: He met Mandela as well as a god and a collector.