War of the Spark Theme Booster Blue has variants:
Explore this pack in Sealed.

Sheets

Sheet uncommon (duplicates allowed)

At rate 4/57 (7.02%)
Ashiok, Dream Render
Augur of Bolas
Bond of Insight
Dovin, Hand of Control
Eternal Skylord
Flux Channeler
Jace's Triumph
Kasmina, Enigmatic Mentor
Kiora, Behemoth Beckoner
Lazotep Plating
Narset, Parter of Veils
Rescuer Sphinx
Saheeli, Sublime Artificer
At rate 1/57 (1.75%)
Emergence Zone
Firemind Vessel
God-Pharaoh's Statue
Interplanar Beacon
Ugin's Conjurant

Sheet common (duplicates allowed)

At rate 2/41 (4.88%)
Ashiok's Skulker
Aven Eternal
Callous Dismissal
Contentious Plan
Crush Dissent
Erratic Visionary
Kasmina's Transmutation
Kiora's Dambreaker
Naga Eternal
No Escape
Relentless Advance
Sky Theater Strix
Spellkeeper Weird
Stealth Mission
Tamiyo's Epiphany
Teferi's Time Twist
Thunder Drake
Totally Lost
Wall of Runes
At rate 1/82 (1.22%)
Gateway Plaza
Guild Globe
Iron Bully
Mana Geode
Prismite
Saheeli's Silverwing

Sheet rare_mythic

At rate 4/33 (12.12%)
Commence the Endgame
Fblthp, the Lost
Jace, Wielder of Mysteries
Narset's Reversal
Silent Submersible
Spark Double
At rate 2/33 (6.06%)
Finale of Revelation
God-Eternal Kefnet
At rate 1/33 (3.03%)
Blast Zone
Karn's Bastion
Karn, the Great Creator
Mobilized District
Ugin, the Ineffable