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From $6.75
This land enters tapped.
{T}: Add {B} or {G}.
{1}{B}{G}: Until end of turn, this land becomes a 2/2 black and green Elemental creature with deathtouch. It's still a land.
From $44.50
If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on...
From $9.00
{T}: Add {C}.
{5}, {T}: Add {W}{U}{B}{R}{G}.
$14.50
These hooded and masked minions of the Shadow Deep are men whose souls have been completely corrupted and fight with an insane fury and complete disregard for personal safety or...
From $45.50
At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life. {T}: Add {C}. {4}, {T}, Sacrifice Inventors' Fair: Search your library for an...
From $2.25
This land enters tapped. {T}: Add {U} or {R}. {2}{U}{R}: Until end of turn, this land becomes a 1/4 blue and red Elemental creature with "{0}: Switch this creature's power...
From $3.50
You may have this land enter tapped as a copy of any land card in a graveyard, except it's a Cave in addition to its other types.
{T}: Add {C}.
$22.20
Ogres are large, primitive humanoids. While not inherently evil, they have a tendency towards violence and cruelty which makes them extremely susceptible to the corrupting influence of the Shadow Deep....
From $7.00
This land enters tapped.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts.
Modular 1
From $0.75
{T}: Choose a color of a permanent you control. Add one mana of that color.