Quote Originally Posted by Aimeryan View Post
Can you think of any self-range spell (other than Shadow Blade) that you would make the same ruling for?
I found a lot of Touch-range spells that bestowed no effect upon the caster, but no self-range ones.
I wouldn't categorize them by range, since the range is entirely irrelevant. That being said, Spirit Guardians is another spell with a range of self that does not bestow an effect on the caster, but it instead creates spirits that flit around the caster (i.e. a magical effect, which in turn can be targeted by dispel magic.)

The ruling I proposed is based entirely on the nature of the spell effect per dispel magic's description. The mechanics are simple. What effect does the spell create, and does it reside on a creature, an object or in the form of a magical effect? The answer to that question is the answer to "What can dispel magic target?"