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Search for Azcanta // Azcanta, the Sunken Ruin
At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Search for Azcanta. (Look at the top card of your library. You may put that card into your graveyard.) // (Transforms from Search for Azcanta.) {T}: Add {U}. {2}{U}, {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.
Rulings (3)
Sep 29, 2017 · If a seventh card is put into your graveyard by something other than resolving Search for Azcanta's triggered ability, you won't transform it yet. You'll have to wait until your next upkeep.
Sep 29, 2017 · If you don't put the top card of your library into your graveyard while resolving Search for Azcanta's triggered ability, you'll leave it on top of your library (and probably draw it during your draw step).
Sep 29, 2017 · If you have seven or more cards in your graveyard, you may transform Search for Azcanta while resolving its triggered ability even if you choose not to put the top card of your library into your graveyard.