Reichsacht
Like many other Bohemian nobles he was concerned over the rise of the Přemyslid prince Ottokar II, son and heir of King Wenceslaus I of Bohemia, who in 1251 was installed as Austrian duke. Bohemian king from 1253, Ottokar founded the royal city of Budějovice (Budweis) and Zlatá Koruna Abbey to hinder further expansion of the Vítkovci domains; he also denied dynasty's entitlement to the Lordship of Velešín. However, his position was undermined when he entered into a fierce conflict with Count Rudolf of Habsburg, elected King of the Romans in 1273. Rudolf reclaimed the Austrian duchy and numerous other 'alienated' territories; when in 1276 he imposed an Imperial ban on Ottokar, several Bohemian nobles around Zavis took the occasion for open revolt.