At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Heart of the Explorer.

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The Lost Valley - Azcanta, the Sunken Ruin

(Transforms from Heart of the Explorer - Search for Azcanta.)

T: Add U.

2U, T: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in any order.