Fellwar Stone [Duskmourn: House of Horror Commander] Time Lord Noble The air was filled with

The air was filled with the cracks and snaps of flesh hardening as the new sliver joined the battle

Set: Ravnica Allegiance Type: Creature — Wurm Rarity: Mythic Cost: {3}{R}{G}{G} Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste

{T}: You may play the exiled card without paying its mana cost if an opponent was dealt 7 or more damage this turn

Set: Magic Premiere Shop 2010 Type: Basic Land — Swamp Rarity: Common ({T}: Add {B}

but I've never seen anything like it

Fellwar Stone [Duskmourn: House of Horror Commander] Time Lord Noble The air was filled withSet: Duskmourn: House of Horror Commander Type: Artifact Rarity: Uncommon Cost: {2} {T}: Add one mana of any color that a land an opponent controls could produce. "What do you have that I cannot obtain?" Mairsil, the Pretender