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 - $2.75
Near Mint Non-English - $2.75
Lightly Played - $2.50
Lightly Played Non-English - $2.50
Moderately Played - $2.25
Moderately Played Non-English - $2.25
Heavily Played - $1.75
Heavily Played Non-English - $1.75
Damaged - $1.50
Damaged Non-English - $1.50
Foil Prices
Near Mint Foil - $11.75
Near Mint Foil Non-English - $11.75
Lightly Played Foil - $11.25
Lightly Played Foil Non-English - $11.25
Moderately Played Foil - $9.50
Moderately Played Foil Non-English - $9.50
Heavily Played Foil - $7.00
Heavily Played Foil Non-English - $7.00
Damaged Foil - $6.00
Damaged Foil Non-English - $6.00