Doubling Season [Ravnica: City of Guilds] Human Assassin Remove a mining counter from

Remove a mining counter from Gemstone Mine: Add one mana of any color

it's an artifact creature with power and toughness each equal to its mana value

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {2} {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of

and the Unbeholden

Doubling Season [Ravnica: City of Guilds] Human Assassin Remove a mining counter fromSet: Ravnica: City of Guilds Type: Enchantment Rarity: Rare Cost: {4}{G} If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead. If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead.