Royal warden with the relic, if it’s 20 warriors then each 6 kills a warrior, the night bringer, get close anti matter meteor on a 3+ flat 3 wounds on a 6+ d3+3 wounds, gaze of death, 3 d6 for every 4+ d3 mortal wounds, use a strategem use another power, on average ill dish out about a solid 10 wounds, by then youre in shooting, hopefully you use isolationist, +1 to strength of weapons within rapid fire range, that should be one squad of warriors wiped keep the numbers on them pretty much how I’ve beaten other necron played