Slytherin was one of the four Houses at Hogwarts School of Witchcraft and Wizardry, founded by Salazar Slytherin. In establishing the house, Salazar instructed the Sorting Hat to pick students who had a few particular characteristics he most valued. Those characteristics included cunning, resourcefulness, leadership, and ambition. Many Slytherin students tended to clique together (often acquiring leaders) which further exemplified Slytherin's ambitious qualities. Examples of these included Draco
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Slytherin Quidditch team's Nimbus 2001 broomsticks, Harry Potter Wiki
Unidentified Slytherin boy (V), Harry Potter Wiki
Slytherin's Spellbook, Harry Potter Wiki
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Slytherin, Harry Potter Wiki
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Slytherin, Harry Potter Wiki
Slytherin's Locket, Harry Potter Wiki