on the PTR, MS now removes DoT effects on the target. Blizzard wanted MS out of the SPriest's normal PvE rotation. I get why the change makes sense for that purpose. However, it's not hard to see why MS's PvP viability is almost nil, now. I was really digging the synergy they created between the auto-crit mind-blast and the talent that immobilized targets on MB crits. Ah well...one less mechanic to worry about.