, Tap an untapped creature you control: Add one mana of any color.

At the beginning of the end step, if you control no creatures, sacrifice this land.

: Add one mana of any color.

: Add one mana of any color. Activate only if you control a Dragon.

Equipped creature has ": Add one mana of any color."

Equip

: Add one mana of any color. You get two poison counters.

: Add one mana of any color.

Other noncreature artifacts are mono and continuous. (Each activated ability of mono artifacts costs an additional to activate if its cost doesn't already include . As long as a continuous artifact is tapped, it loses all abilities.)

Suspend 3— (Rather than cast this card from your hand, pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

: Add one mana of any color.

: Add one mana of any type that a land you control could produce.

: Choose a color of a permanent you control. Add one mana of that color.

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)

Creatures you control with the chosen name have ": Add one mana of any color."

: Add one mana of any color in your commander's color identity. If you control a Command Tower and a Command Power Plant, add two mana of any color in your commander's color identity instead.

, : Add one mana of any color.

Metalcraft — : Add one mana of any color. Activate only if you control three or more artifacts.

: Add one mana of any color. Spend this mana only to cast a creature spell.

This land enters tapped. As it enters, choose a color.

: Add one mana of the chosen color.

, : For each color among monocolored permanents you control, add one mana of that color.

: Add one mana of any color that a land an opponent controls could produce.

This land enters tapped.

When this land enters, sacrifice it unless you tap an untapped permanent you control.

: Add one mana of any color.

: Add . ( represents colorless mana.)

, Tap an untapped creature you control: Add one mana of any color.