The Arson Power: The Arson power as described on p. 54 of the Brainburners Sourcebook states that: “When used, Arson creates a fiery burst with a diameter equal to the syker’s Spirit die type in yard. Targets within this diameter take 2d10 damage, plus 1d10 per raise. Use the massive damage rules on important characters.” Does this mean that this power works like a grenade with a burst radius equal to half the syker’s Spirit die type? Or does it only effect targets with in the diameter of effect?
Arson doesn't have a burst radius like a grenade. It does the same amount of damage to everything caught in its diameter.