So if there are multiple characters using the same skill, are the effects cumulative? 1). Sorcerers curse - if cast on the same target by multiple sorcerers is the 30 defense reduction added each time? 2). Wyrdstone hunter - if more than one person has this skill is there an cumulative chance of finding shards? 3). Luck spell - if cast multiple times on the same character do they get multiple rerolls?