This might be semantics, but MTG is a bit of a word game.

Bubble Matrix reads "All damage [u]dealt[/u] to creatures is reduced to 0". Cards with death touch state that any amount of damage [u]dealt[/u] to creature is enough to destroy it.

The question is, in this scenario and other similar plays (i.e. Lifelink), do effects that happen based on damage [u]dealt[/u] still occur before/although damage is reduced to 0?

sweetcheetah wrote:This might be semantics, but MTG is a bit of a word game.

Bubble Matrix reads "All damage [u]dealt[/u] to creatures is reduced to 0". Cards with death touch state that any amount of damage [u]dealt[/u] to creature is enough to destroy it.

The question is, in this scenario and other similar plays (i.e. Lifelink), do effects that happen based on damage [u]dealt[/u] still occur before/although damage is reduced to 0?

Negative. As all damage is prevented/reduced to zero, there would be no triggering of any damage based effects like lifelink or deathtouch. This is similar to using a Fog to stop a deathtouch creature from killing your creature. While, damage prevention IS different from what Bubble Matrix is doing, for this purpose, it will have the same effect.