Protean Hulk dies on ETB, fetching Nomads en-Kor, Cephalid Illusionist, and Thassa's Oracle.
In response to the Thassa's Oracle ETB, mill your entire library using Nomads en-Kor targeting Cephalid Illusionist as many times as needed to mill your library.
Allow Thassa's Oracle ETB to resolve winning the game off of Thassa's Oracle's triggered ability.