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From $0.50
'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.
From $1.50
'Other Zombie creatures have swampwalk. (They can't be blocked as long as defending player controls a Swamp.)
Other Zombies have "{B}: Regenerate this permanent."
From $0.25
'As this land enters, you may reveal a Swamp or Mountain card from your hand. If you don't, this land enters tapped.
{T}: Add {B} or {R}.
From $2.75
'({T}: Add {B} or {R}.)
This land enters tapped unless you control two or more basic lands.
From $59.00
'{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
From $8.00
'({T}: Add {B} or {R}.)
This land enters tapped.
When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
From $6.50
'This land enters tapped unless you control two or more other lands.
{T}: Add {U} or {B}.
![Beholder's Death Ray [Snuff Out] (Borderless) magic-card Wizards of the Coast](http://flipsidegaming.com/cdn/shop/files/9eba002c-3562-4295-81e4-5f408f1556c6.jpg?v=1779403200&width=1)
![Beholder's Death Ray [Snuff Out] (Borderless) magic-card Wizards of the Coast](http://flipsidegaming.com/cdn/shop/files/9eba002c-3562-4295-81e4-5f408f1556c6.jpg?v=1779403200&width=600)
From $8.50
'If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.
From $8.75
{T}: Add {G}.
{T}: Add {B}. Activate only if you control a Swamp or a Forest.
From $0.50
'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...