The Doctor's plan didn't seem to work for long because the Propheetis hatched a plan to take over the Earth. At the centre of its attack was to be a replica of the Taj Mahal (which had been purchased from a bad Branceerian). The landmark was converted to be their biggest weapon and was to be used once it had replaced the original and the Propheetis were ready. However, the Doctor set off all the weapons while the replica was still on the Hollow Moon of Artenture. (COMIC: Terror in the Taj Mahal)