Mana Geyser

Add for each tapped land your opponents control.

Darksteel Ingot

Indestructible (Effects that say “destroy” don’t destroy this artifact.)
: Add one mana of any color.

Vivid Crag

Vivid Crag enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Crag: Add one mana of any color.

Darksteel Forge

Artifacts you control have indestructible. (Effects that say “destroy” don’t destroy them. Artifact creatures with indestructible can’t be destroyed by damage.)

Quag Sickness

Enchant creature
Enchanted creature gets -1/-1 for each Swamp you control.

Darksteel Ingot

Indestructible (Effects that say “destroy” don’t destroy this artifact.)
: Add one mana of any color.

Vivid Crag

Vivid Crag enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Crag: Add one mana of any color.

Zoetic Cavern

: Add .
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Darksteel Ingot

Indestructible (Effects that say “destroy” don’t destroy this artifact.)
: Add one mana of any color.

Squadron Hawk

Flying
When Squadron Hawk enters, you may search your library for up to three cards named Squadron Hawk, reveal them, put them into your hand, then shuffle.

Mind Stone

: Add .
, , Sacrifice Mind Stone: Draw a card.

Runewing

Flying
When Runewing dies, draw a card.

Nivix, Aerie of the Firemind

: Add .
, : Exile the top card of your library. Until your next turn, you may cast it if it’s an instant or sorcery spell.

Svogthos, the Restless Tomb

: Add .
: Until end of turn, Svogthos, the Restless Tomb becomes a black and green Plant Zombie creature with “This creature’s power and toughness are each equal to the number of creature cards in your graveyard.” It’s still a land.

Farseek

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.