Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle your library. Then if you control three or more Deserts, create two 2/2 black Zombie creature tokens.
7/14/2017 When Hour of Promise checks the number of Deserts you control, it includes any Deserts you found earlier with Hour of Promise.
1/19/2018 There are many important moments in the story, but the most crucial—called “story spotlights”—are shown on cards. These cards have the Planeswalker symbol in their text box; this symbol has no effect on gameplay. You can read more about these events in the official Magic fiction at http://www.mtgstory.com.