Manabarbs [Fourth Edition (Foreign Black Border)] Teferi who also discusses his work

who also discusses his work on playtesting

Set: Judge Gift Cards 2014 Type: Basic Land — Forest Rarity: Rare ({T}: Add {G}

You may cast spells with the same name as that spell from among the revealed cards without paying their mana costs

Set: Commander 2014 Type: Creature — Elemental Beast Rarity: Rare Cost: {5}{G} When Grave Sifter enters the battlefield

Then that player loses all unspent mana and you add the mana lost this way

Manabarbs [Fourth Edition (Foreign Black Border)] Teferi who also discusses his workSet: Fourth Edition (Foreign Black Border) Type: Enchantment Rarity: Rare Cost: {3}{R} Whenever a player taps a land for mana, Manabarbs deals 1 damage to that player.