When a card has in its mana cost, is counted as 0 for its mana value while it's in play
In Commander, its arguably even better
Whether you sacrifice Treasures, crack Clues, or lose creatures in combat, you can have target opponent lose 1 life
Some of my fondest memories of competitive play involved Martial Coup, which is nearly identical to the design of White Suns Twilight
So we give you a couple more: Sol Ring from Kaladesh Inventions - NM Rings of Brighthearth (Serialized, 043/100) from The Lord of the Rings: Tales of Middle-earth Holiday Release - NM The One Ring (Silver Foil) from The Lord of the Rings: Tales of Middle-earth Holiday Release - NM Tom Bombadil from The Lord of the Rings: Tales of Middle-earth Holiday Release - NM Ponder from Timespiral Remastered: Extras - NM The Tenth Doctor (Serialized, 236/510) from Universes Beyond: Doctor Who: Extras - NM Don't Move (Emblem Foil) from Universes Beyond: Jurassic World Collection - NM Miscellaneous A couple of Wheel of Fortune from Revised came in (Condition: NM, EX, LP)