Master of Decay edge

Could you please check if this Edge works properly? I've faced several issues which I doubt were supposed to happen when you have this Edge, i.e.: 1. I've got crimson scourged when loot for example money from corpse of player who was affected by my own spell; 2. I've failed to place crimson scourge several times in combat upon Elf character (which is 16 con). This disappointed me even twice as I had Black Duelist edge as well. thanks.