+"Swamp" (35)
(: Add or .)
As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
Canyon Slough enters the battlefield tapped.
Cycling (, Discard this card: Draw a card.)
Contaminated Aquifer enters the battlefield tapped.
Fetid Pools enters the battlefield tapped.
(: Add .)
Gate of the Black Dragon enters the battlefield tapped.
, : Seek a nonland card. Activate only once.
Geothermal Bog enters the battlefield tapped.
As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
Haunted Mire enters the battlefield tapped.
Ice Tunnel enters the battlefield tapped.
(: Add , , or .)
Indatha Triome enters the battlefield tapped.
Leechridden Swamp enters the battlefield tapped.
, : Each opponent loses 1 life. Activate only if you control two or more black permanents.
As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
Raffine's Tower enters the battlefield tapped.
Raucous Theater enters the battlefield tapped.
When Raucous Theater enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Savai Triome enters the battlefield tapped.
Shadowy Backstreet enters the battlefield tapped.
When Shadowy Backstreet enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.
Snowfield Sinkhole enters the battlefield tapped.
Sulfurous Mire enters the battlefield tapped.
Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.
Sunlit Marsh enters the battlefield tapped.
Undercity Sewers enters the battlefield tapped.
When Undercity Sewers enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Underground Mortuary enters the battlefield tapped.
When Underground Mortuary enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
Witch's Cottage enters the battlefield tapped unless you control three or more other Swamps.
When Witch's Cottage enters the battlefield untapped, you may put target creature card from your graveyard on top of your library.
Woodland Chasm enters the battlefield tapped.
Xander's Lounge enters the battlefield tapped.
Zagoth Triome enters the battlefield tapped.
Ziatora's Proving Ground enters the battlefield tapped.
Gatherer works better in the Companion app!
: Add 
.)