Heroes, Vampires and Slayers

Several women all over the Multiverse get superhuman enhancements and then visitors from Earth-92 reveal they all have been made Slayers. But a dark power is trying to take over some Earths. Can all of the Heroes of our Multiverse stop them? Part 12 of the 'Heroes' series but not necessary to read the previous ones. Buffyverse/MCU/Blade/Smallville/Merlin/LOTR/Arrowverse crossover.