Sort by:
$0.25 – $1.25
'Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.
$30.50 – $44.50
'{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.
$10.25 – $13.75
({T}: Add {U} or {B}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.
$7.50 – $8.75
{T}: Add {G}.
{T}: Add {B}. Activate only if you control a Swamp or a Forest.
$0.25 – $0.50
'Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.
$9.25 – $11.25
{T}: Add {G}.
{T}: Add {B}. Activate only if you control a Swamp or a Forest.
$72.75 – $124.50
'If this land would enter, sacrifice a Swamp instead. If you do, put this land onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add {B}....
$13.00 – $15.75
'Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for...
$17.25 – $20.50
'{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.
$0.25
'Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
$1.75 – $5.75
'If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost.
Creatures you control get +2/+0 until end of turn.
$0.50 – $1.25
'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 this...