Q1. The DMG states that sun blades are longswords, so do they have the versatile property in addition to the finesse property? I think they might, as both the historical katana and fictional lightsaber would doubtless be classed as finesse weapons, but are generally used two-handed.
Q2. If the answer to Q1 is yes, does the damage bonus against undead also increase when the weapon is used two-handed, or is it fixed?
Q3. The text for the darkness spell states that non-magical light can't illuminate its area of effect. Presumably this doesn't apply to light from a sunblade?
Q2. If the answer to Q1 is yes, does the damage bonus against undead also increase when the weapon is used two-handed, or is it fixed?
Q3. The text for the darkness spell states that non-magical light can't illuminate its area of effect. Presumably this doesn't apply to light from a sunblade?