MArcomage

??? what is the effect?

I believe he means to say that player's tower increased by N, where N = opponent's tower

To be clear, it would not change the opponent's height in the process.

The current text has made the effect more confusing. Why did you change it?

Own tower +N
N- enemy tower height (no changes in process)

Just have it say:

Tower + N
N = opponent's tower height

Using a dash makes it look like you're trying to subtract something.