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Casting Cost:

Target spell or permanent becomes green. (Mana symbols on that permanent remain unchanged.)

Casting Cost: 

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Casting Cost: 

Casting Cost: 

All Forests are 1/1 creatures that are still lands.

Casting Cost: 

: Regenerate Living Wall.

Casting Cost: 

: Add  mana to your mana pool.

Casting Cost:

Other Merfolk creatures get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Casting Cost:

Flying, trample

At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can't, Lord of the Pit deals 7 damage to you.

Casting Cost: 

Enchant creature

All creatures able to block enchanted creature do so.

Casting Cost:

Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwalk" to "plainswalk." This effect lasts indefinitely.)

Casting Cost:

Flying (This creature can't be blocked except by creatures with flying or reach.)

Casting Cost:

Whenever a player taps a land for mana, that player adds one mana to his or her mana pool of any type that land produced.

Casting Cost: 

Tap all lands target player controls and empty his or her mana pool.

Casting Cost: 

Mana Vault doesn't untap during your untap step.

At the beginning of your upkeep, you may pay If you do, untap Mana Vault.

At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.

: Add  to your mana pool.

Casting Cost:

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Casting Cost: 

Casting Cost:

Target player discards X cards at random.

Casting Cost: 

: Add  to your mana pool.