If this or any god interacts with the Universe, it should leave evidence. That falls directly under the purview of science and can be measured, at least potentially.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'