Cleon
Legend
Great start. Let's change "illuminated by a light source" to "in any area other than total darkness" to keep it easier to adjudicate. How about blinded for 1d4 rounds, then dazzled for 1 round thereafter on a failed save, and simply dazzled for 1d4 rounds on a success?
Looks good, except I don't much care for the blinding lasting longer than the dazzling. How about 1d4 rounds duration for both?
Fair enough. DR 20 it is. You think CR 15 or 16?
I'd go for DR20 and CR 16. It may not look that much stronger than an SRD Iron Golem but that AC and magic-immunity makes it a tough stone to split.