All Sliver creatures have "This creature gets +1/+1 as long as you control a Swamp." All Slivers have "{B}: Regenerate this permanent." (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)
Their flesh is as sodden as the fens in which they live, oozing to fill any wound and squishing to absorb any blow.
Near Mint - $1,000
Lightly Played - $800
Moderately Played - $700
Heavily Played - $600
Damaged - $500
Near Mint Spanish - $1,000
Lightly Played Spanish - $800
Moderately Played Spanish - $700
Heavily Played Spanish - $600
Damaged Spanish - $500