You gain 1 life for each attacking creature you control
Its a totally unique one of one copy (as printed on the card)
I believe this card lasted for one playtest

Oathbreaker: Sorin, Solemn Visitor with Blinding Beam Creatures: Baird, Steward of Argive, Benalish Trapper, Custodi Lich, Deathbringer Liege, Gideons Avenger, Imposing Sovereign, Kinjallis Sunwing, Kor Hookmaster, Kytheons Irregulars, Nomad Decoy, Rathi Assassin, Rathi Trapper, Royal Assassin, Sunblast Angel, Thalia, Heretic Cathar, Yosei, the Morning Star Artifacts: Orb of Dreams, Throne of the God-Pharaoh Enchantments: Blind Obedience, Crackdown Instants: Angelsong, Batwing Brume, Darkness, Ethereal Haze, Glimpse the Sun God, Heros Downfall, Safe Passage Sorceries: Blinding Light, Damnation, Murderous Compulsion, Regnas Sanction, Righteous Fury, Swift Reckoning, Wrath of God Planeswalker: Gideon Jura Land: 7 Plains, 7 Swamp, Caves of Koilos, Concealed Courtyard, Fetid Heath, Forsaken Sanctuary, Godless Shrine, Isolated Chapel, Orzhov Guildgate, Scoured Barrens, Temple of Silence Translating a Winning Combination The inspiration for this deck came from a casual deck that I played with my local playgroup and developed over a decade

Its a clean, easy-to-understand combat ability with some interesting design space left to explore
This deck can quickly generate massive amounts of value and overwhelm your opponents