All the Mahdi (Muslim Antichrist) will have to do to get the apostate West to flock into the mosques to take whatever mark is asked them to take is use the already in place Islamic doctrine of abrogation to proclaim a poofter and trans friendly, or even mandatory, version of Islam.
Otherwise the depraved will not go anywhere without their beloved perverts and madmen.
Expect the perverts and madmen to lead the charge in killing Christians.
Ever since Britain allowed Sharia Law to be practiced along side British Common Law the end became inevitable. You can't have two legal systems existing side by side. Sharia isn't law anyway, not as any civilized society should have. It's more a gangster code for a death cult founded on violence, depravity, sensualism and human passions.