Thassa, God of the Sea (LCC-176) - The Lost Caverns of Ixalan Commander: (enchantment)

Indestructible
As long as your devotion to blue is less than five, Thassa isn't a creature. (Each in the mana costs of permanents you control counts toward your devotion to blue.)
At the beginning of your upkeep, scry 1.
: Target creature you control can't be blocked this turn.