The deranged Army vet who savagely murdered his seven kids and nephew in Louisiana on Sunday once ominously warned his wife he would kill their entire family if she ever left him. “I’ll kill you, my kids and myself,” Shamar Elkins, 31, hissed to his spouse, Shaneiqua Pugh, three years ago after she said she was considering filing for divorce, according to the killer’s adoptive mother, who witnessed the comment, to the New York Times. Betty Walker said she was in the kitchen cooking when her