Thin, snakelike cords burst from the end of Snape's wand and twisted themselves around Lupin's mouth, wrists, and ankles; he overbalanced and fell to the floor, unable to move.
" The Minister was just telling me about your lucky escape, Potter, " drawled Mr Malfoy, " Quite astonishing, the way you continue to wriggle out of very tight holes...snakelike, in fact."
Before Voldemort could stick his snakelike face around the headstone. Harry stood up ... he gripped his wand tightly in his hand, thrust it out in front of him, and threw himself around the headstone, facing Voldemort.
Dumbledore gave his wand a little flick, as if he was trying to get a fly off the end. And a long golden ribbon flew out of it, which rose high above the tables and twisted itself, snakelike, into words.