Even in areas of profound devastation, the hedrons remained intact.

Holdout Settlement

{T}: Add {C}. ({C} represents colorless mana.)
{T}, Tap an untapped creature you control: Add one mana of any color.

Starter Commander Decks

Oath of the Gatewatch

{T}: Add {C} to your mana pool. ({C} represents colorless mana.)
{T}, Tap an untapped creature you control: Add one mana of any color to your mana pool.

To activate the last ability, you may tap any untapped creature you control, including one you haven’t controlled continuously since the beginning of your most recent turn. (Note that tapping the creature doesn’t use {T} [the tap symbol].)