5 of the 17 were printed for the first time in the last couple of years
Both players in this start with five lives
However, some kind of Lightning-type deck seems to always be viable in Expanded, so Im sure if the format gets more interest, players will explore this deck more

Stalwart Unity Current value of reprints (only cards worth $1 or more): $116 Current value of new cards (only cards worth $1 or more): $13 Total current value: $129 Collective Voyage $12 Forbidden Orchard $9 Tempt with Discovery $6 Lurking Predators $6 Homeward Path $6 Progenitor Mimic $5 Vensers Journal $5 Chasm Skulker $4 Keening Stone $4 Oath of Druids $4 Ghostly Prison $4 Propaganda $4 Myriad Landscape $4 Zedruu the Greathearted $4 Minds Aglow $4 Howling Mine $4 Swords to Plowshares $3 Beast Within $2 Swan Song $1.50 Kynaios and Tiro of Meletis $3 Prismatic Geoscope $3 Selfless Squire $2 Sidar Kondo of Jamuraa $2 Current value of reprints (only cards worth $1 or more): $78 Current value of new cards (only cards worth $1 or more): $28 Total current value: $106 Master of Etherium $10 Baleful Strix $6 Solemn Simulacrum $5 Ethersworn Adjudicator $5 Godo, Bandit Warlord $4.50 Daretti, Scrap Savant $4 Beacon of Unrest $4 Hellkite Tyrant $4 Skullclamp $3 Soul of New Phyrexia $2.50 Hanna, Ships Navigator $2 Sydri, Galvanic Genius $2 Thopter Foundry $2 Magus of the Will $10 Breya, Etherium Shaper $4 Akiri, Line-Slinger $4 Silas Renn, Seeker Adept $2 Faerie Artisans $2 Bruse Tarl, Boorish Herder $2 Current value of reprints (only cards worth $1 or more): $80 Current value of new cards (only cards worth $1 or more): $24 Total current value: $104 Kalonian Hydra $11 Scavenging Ooze $8 Reveillark $8 Cauldron of Souls $6 Darkwater Catacombs $6 Sungrass Prairie $5 Underground River $5 Master Biomancer $4 Mirrorweave $3 Hardened Scales $2 Murmuring Bosk $2 Atraxa, Praetors Voice $5 Deepglow Skate $4 Ikra Shidiqi, the Usurper $4 Reyhan, Last of the Abzan $3 Crystalline Crawler $2 Ishai, Ojutai Dragonspeaker $2 Reprints of note: Wow, what a list

Thats a dizzying amount of choices for building your deck
Unfortunately, the card must be red, making this pick much better in mono-red decks