Hungary's incoming prime minister, Péter Magyar , arrived Saturday at the Parliament building to be sworn into office, ending Viktor Orbán 's autocratic 16-year rule. Magyar’s center-right Tisza party defeated Orbán’s nationalist-populist Fidesz in a stunning blow last month, gaining more votes and seats in Parliament than any other party in Hungary’s post-Communist history. The win will allow Tisza to roll back many of the policies that gave Orbán a reputation among many of his critics as a far-right authoritarian, clamp down on alleged corruption and transform political dynamics within the European Union , where the former prime minister had upended the bloc by frequently vetoing key decisions. A Parliament without Orbán On Saturday, Magyar entered the sprawling neo-Gothic parliament building alongside 140 of his party representatives, controlling 141 seats in Hungary's 199-seat parliament.…