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From $1.75
'Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.
$31.50
8 cards per pack, 12 packs per box 12 new illustrations included!Kaiju No. 8 x 1Hibino Kafka x 1Ichikawa Reno x 2Shinomiya Kikoru x2 Ajiro Mina x 2Hoshina Soushirou x...
From $9.25
{T}: Add {G}.
{T}: Add {B}. Activate only if you control a Swamp or a Forest.
From $11.00
'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...
From $0.25
'Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.
From $1.00
'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...
From $16.75
'Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield....
From $2.00
'Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.