False Alignment

When casting this spell you designate another alignment. For all purposes you are treated as if you had the selected alignment. This applies to divination spells, alignment-dependent spell effects, and magic item usage. You do not lose any feats, classes, class abilities, or prestige classes that have an alignment prerequisite since your alignment doesn't actually change.

Planar effects based on alignment will still affect you. While you can use this spell to deceive the followers of a deity, the deity itself will notice the deception if you ask for spells or other powers to be granted. You cannot gain access to feats, classes, class abilities, or prestige classes that have an alignment prerequisite by using this spell to temporarily become that alignment.

Note that this may result in some unsavory results. For example, if you were wearing armor only wearable by evil characters and you change your alignment to good you will not be able to continue wearing it.