The Knight had hidden the real sacred Grail among lots of other glittering cups.In the supernatural showdown, there was a choice of Grails to drink from to attain eternal life (the Knight advised Donovan: "Choose wisely").Three others cast more spells to create a strong shield around he castle:Charms master and head of Ravenclaw House Filius Flitwick (Matthew Davis)Professor Horace Slughorn (Jim Broadbent), head of Slytherin HouseMolly Weasley (Julie Walters), with ""good witch"" powers, the mother of Ginny and Ron and twins Fred and GeorgeVoldemort, meanwhile, was summoning his dark and evil forces outside the castle, to begin combat.Outside during furious ground fire, Chirrut (while chanting "I""m one with the Force.The Force is with me") activated the Master Switch on a control console to allow communication with the Rebel fleet from Bodhi""s shuttle, although he was lethally-wounded by a blast.A white-bearded, academic professor with a pointed hat named Professor Barbenfouillis (Georges Melies himself), the president of the society, enters while everyone sits, and explains to the members of his plan for an exploratory trip to the moon.