Does it not stack? How long does the effect last? If it’s only for the duration of the effect, then 10 secs of DW, for example, for would remove 200 HP.
The most you could do with this is run-by’s where you first DW an entire base manually, pull back and then go in with weaker ground forces. However, this isn’t better than just F2A-moving that same army into the enemy base.
I suppose you could spend on Centurions & Corsairs instead of DT’s & Corsairs so that you spend even amounts of gas+mineral.