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'Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one other target creature...
'When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your...
'Constellation — Whenever this creature or another enchantment you control enters, target player mills two cards.
'Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one other target creature...
'Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one other target creature...
'Counter target spell unless its controller pays {X}, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to...
'When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your...
'Choose one — • Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your...
'Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion...
'Bestow {5}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Whenever this creature...
'When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your...
'Choose one — • Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your...