After breaking out Nathanos, a Troll's stacks will reset before the first tick of Chilling Touch in Phase 3 because of the shorter duration.

For non-Trolls, the Intermission stacks will carry over into Phase 3.

This means that the majority of Method went into the final phase with 1 less stack of Chilling Touch than non-Trolls.

One stack individually doesn't sound like much, but one stack on the entire raid is a massive amount of healing in the last phase and shortens the amount of time they have to burn Jaina.

The Passive Da Voodoo Shuffle reduces the duration of the Chilling Touch DoT from 20 seconds to 16 seconds! There are only two points where the reduced duration of Chilling Touch makes a huge impact.The first relevant point is at the end of Phase 2, when the raid generally has ~9 stacks of Chilling Touch . Starting the Intermission lets the debuff reset. Being a Troll shortens the Chilling Touch DoT by multiple ticks, which is a lot of raid damage that is missing when comparing a raid of Trolls to a raid of not Trolls.The second relevant point is at the end of the Phase 2 intermission. The raid generally gets one stack of Chilling Touch after defeating the wall.