Quest for Temple of the Sea

At the beginning of your upkeep, you may
look at the top card of your library. If it's a
creature card, you may reveal it and put a
quest counter on Quest for Temple of the Sea.
At the beginning of each end step, if there
are three or more quest counters on Quest
for Temple of the Sea, you may put an Octopus,
Jellyfish, Crab or Shark creature card
from your hand onto the battlefield.