 At the Sejm of 1603 Zamoyski led opposition to the governance reforms proposed by Sigismund ; seeing in them intentions of transforming the Commonwealth into an absolute monarchy . Later , he also opposed Sigismund 's plans to intervene in the civil war plaguing Muscovy ( the Time of Troubles and the Dymitriads ) . He clashed with Sigismund for the final time during the Sejm of January 1605 . 
