Guilds of Ravnica Seeded Prerelease Booster Izzet has no variants:
Explore this pack in Sealed.

Sheets

Sheet common

At rate 1/31 (3.23%)
Capture Sphere
Command the Storm
Cosmotronic Wave
Devious Cover-Up
Direct Current
Disdainful Stroke
Fearless Halberdier
Fire Urchin
Goblin Electromancer
Goblin Locksmith
Gravitic Punch
Hypothesizzle
Izzet Guildgate
Izzet Guildgate
Izzet Locket
Leapfrog
Maniacal Rage
Maximize Altitude
Maximize Velocity
Muse Drake
Ornery Goblin
Passwall Adept
Piston-Fist Cyclops
Radical Idea
Rubblebelt Boar
Sonic Assault
Sure Strike
Torch Courier
Vedalken Mesmerist
Wall of Mist
Wishcoin Crab

Sheet uncommon

At rate 1/17 (5.88%)
Beacon Bolt
Beamsplitter Mage
Book Devourer
Chemister's Insight
Crackling Drake
Electrostatic Field
Goblin Cratermaker
Hellkite Whelp
Inescapable Blaze
Invert
Lava Coil
League Guildmage
Murmuring Mystic
Selective Snare
Smelt-Ward Minotaur
Street Riot
Wee Dragonauts

Sheet promo

At rate 1/8 (12.5%)
Expansion
Firemind's Research
Ionize
Narcomoeba
Niv-Mizzet, Parun
Quasiduplicate
Risk Factor
Runaway Steam-Kin