Inventors' Fair [Kaladesh Prerelease Promos] Human Ninja 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: Arena League 1999 Type: Basic Land — Forest Rarity: Rare ({T}: Add {G}

then destroy target creature of an opponent's choice

Set: Judgment Type: Sorcery Rarity: Rare Cost: {1}{G} You may reveal a creature or land card you own from outside the game and put it into your hand

Set: Seventh Edition Type: Land Rarity: Rare Whenever City of Brass becomes tapped

Inventors' Fair [Kaladesh Prerelease Promos] Human Ninja the player can activate manaSet: Kaladesh Prerelease Promos Type: Legendary Land Rarity: Rare 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 artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.