What if Wladyslaw the Elbowhigh wins the Polish Ducal throne in 1287

What if Wladyslaw the Elbowhigh wins the Ducal throne of Poland and is the one that dies by poisoning and Henry IV the Just of Silesia does what OTL Wladyslaw the Elbowhigh did by getting more Polish lands by inheritance and conquest, if John the Blind still claims Poland, what will happen to the HRE and Bohemia as well as Poland.
 
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