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 to blue.)
At the beginning of your upkeep, scry 1.
{1}{U}: Target creature you control can't be blocked this turn.
Near Mint - $3.60
Near Mint Non-English - $3.60
Lightly Played - $3.30
Lightly Played Non-English - $3.30
Played - $2.60
Played Non-English - $2.60
Heavily Played - $2.20
Heavily Played Non-English - $2.20
Damaged - $1.80
Damaged Non-English - $1.80
Foil Prices
Near Mint Foil - $14.60
Near Mint Foil Non-English - $14.60
Lightly Played Foil - $13.10
Lightly Played Foil Non-English - $13.10
Played Foil - $10.20
Played Foil Non-English - $10.20
Heavily Played Foil - $8.80
Heavily Played Foil Non-English - $8.80
Damaged Foil - $7.30
Damaged Foil Non-English - $7.30