Phyrexian Altar [Invasion] Judge Gift Cards 2009 the player can activate mana

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Set: Modern Masters 2017 Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield

Set: Friday Night Magic 2001 Type: Instant Rare Cost: {1}{U} Look at the top four cards of your library

Pay 2 life: Draw a card

where X is 1 plus the exiled creature's converted mana cost

Phyrexian Altar [Invasion] Judge Gift Cards 2009 the player can activate manaSet: Invasion Type: Artifact Rare Cost: {3} Sacrifice a creature: Add one mana of any color. "Your life was meaningless, but your death will glorify Yawgmoth." Tsabo Tavoc