Black Phantom explains his plan

This is how Black Phantom explains his plan goes in Princess Twilight Sparkle Part 1.

[

Black Phantom: Ah, music to my ears. Now to finish what I came here for.

Princess Celestial: Hold on, just what do you think you're doing?

Princess Luna:

Black Phantom: Oh,

so I can

. Since destroying your precious tree, there will be no more Elements of Harmony to.

Princess Celestial: Ha. Your plan won't work. The tree's magic will recognize your villainy.

Princess Luna:

Black Phantom: I've already got a solution for that.

[Black Phantom