Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan. Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)
Near Mint - $3.20
Lightly Played - $2.60
Moderately Played - $2.20
Heavily Played - $1.90
Damaged - $1.60
Near Mint Spanish - $3.20
Lightly Played Spanish - $2.60
Moderately Played Spanish - $2.20
Heavily Played Spanish - $1.90
Damaged Spanish - $1.60