Strixhaven: School of Mages Theme Booster Witherbloom has variants:
Explore this pack in Sealed.

Sheets

Sheet uncommon (duplicates allowed)

At rate 4/93 (4.3%)
Bookwurm
Brackish Trudge
Containment Breach
Daemogoth Woe-Eater
Deadly Brew
Devouring Tendrils
Dina, Soul Steeper
Eyetwitch
Flunk
Fortifying Draught
Go Blank
Honor Troll
Karok Wrangler
Mage Hunter
Master Symmetrist
Mortality Spear
Necrotic Fumes
Overgrown Arch
Plumb the Forbidden
Tend the Pests
Tenured Inkcaster
Witherbloom Apprentice
At rate 1/93 (1.08%)
Access Tunnel
Reflective Golem
Spell Satchel
Team Pennant
Zephyr Boots

Sheet common (duplicates allowed)

At rate 2/65 (3.08%)
Arrogant Poet
Bayou Groff
Big Play
Blood Researcher
Charge Through
Cram Session
Crushing Disappointment
Essence Infusion
Field Trip
Hunt for Specimens
Infuse with Vitality
Lash of Malice
Leech Fanatic
Mage Duel
Mage Hunters' Onslaught
Moldering Karok
Novice Dissector
Pest Summoning
Professor of Zoomancy
Professor's Warning
Promising Duskmage
Reckless Amplimancer
Scurrid Colony
Specter of the Fens
Spined Karok
Springmane Cervin
Tangletrap
Unwilling Ingredient
Witherbloom Campus
Witherbloom Pledgemage
At rate 1/130 (0.77%)
Archway Commons
Biblioplex Assistant
Campus Guide
Cogwork Archivist
Environmental Sciences
Excavated Wall
Expanded Anatomy
Introduction to Annihilation
Introduction to Prophecy
Letter of Acceptance

Sheet rare_mythic

At rate 8/181 (4.42%)
Accomplished Alchemist
Baleful Mastery
Basic Conjuration
Callous Bloodmage
Confront the Past
Culling Ritual
Daemogoth Titan
Dragonsguard Elite
Exponential Growth
Gnarled Professor
Necroblossom Snarl
Oriq Loremage
Pestilent Cauldron
Restorative Burst
Poet's Quill
Rushed Rebirth
Sedgemoor Witch
Valentin, Dean of the Vein
Lisette, Dean of the Root
Verdant Mastery
Witherbloom Command
At rate 4/181 (2.21%)
Beledros Witherbloom
Blex, Vexing Pest
Search for Blex
Ecological Appreciation
Harness Infinity
Professor Onyx
At rate 2/181 (1.1%)
Hall of Oracles
Strixhaven Stadium
The Biblioplex
Wandering Archaic
Explore the Vastlands
At rate 1/181 (0.55%)
Mascot Exhibition