Also: this business of changing to the Night-Lamp form as a "defense" I find equally bizarre. The likelihood of winning against an attacker actually seems more slim this way: it's been my experience at least that almost everyone uses an attack-heavy form and that very few people actually do change their form often. Since the Night-Lamp offers no protection from an attack of this kind, it seems to be a better strategy to just stick to your guns and hope to draw as many attacks as possible, rather than wasting cards trying to confuse people who probably won't change their strategy regardless. One might still, at least force a 50/50 if the opponent attacks with your stat.

Do we know if the attack resolution is a Broad check? If it is (with difficulty scaler 50 because of even odds), Night-Lamp means nobody can get better than a 110/80 * 50 = 68.75% chance of defeating you at an attack. The other forms all have a 60, which when attacked with a 110 is defeated 91.7% of the time. (83.3% for 100 vs. 60, if you're Egg Imponderable and not worried about anyone with a Shroud coming after you.)

I'm actually working under the assumption that the stats work, as some have been putting it, in a simple rock/paper/scissors fashion; where the highest stat always wins (and a tie leads to 50/50). I can't confirm this, of course, but it's consistent with my experience so far.