How about this, phantoms, with anti creeper?

[Creeperkingpin]

i know coding is a pain in the neck, but that would be an epic update. maybe add it into the expeimentals as a user maps only weapon? just throwing it out there.

[Grauniad]

You can already specify a negative amount of creeper, which is anti-creeper as the payload for phantoms.  Several maps use this feature.

[Creeperkingpin]

cool :) thank you very much