31 cards where the text includes “upkeep” and the text includes “token” and the rarity is equal to uncommon

Breeding Pit (Duel Decks Anthology: Divine vs. Demonic #53)
Churning Reservoir (Phyrexia: All Will Be One #127)
Commander's Authority (Avacyn Restored #13)
Crawling Infestation (Innistrad: Crimson Vow #193)
Crawling Sensation (Outlaws of Thunder Junction Commander #189)
Dance of Many (Masters Edition III #34)
Discerning Financier (Wilds of Eldraine #10)
Dreampod Druid (Planechase Anthology #64)
Extricator of Sin // Extricator of Flesh (Eldritch Moon #23)
Extricator of Sin // Extricator of Flesh (Eldritch Moon #23)
First Response (Commander Legends #22)
Goblin Assault (Modern Masters 2017 #95)
Honden of Life's Web (Eternal Masters #172)
Jötun Owl Keeper (Coldsnap #9)
Kemba, Kha Regent (Commander Masters #34)
Mycologist (Time Spiral Remastered #29)
Octo Opus (Unfinity #54)
Priest of the Blood Rite (Commander Masters #179)
Psychotrope Thallid (Planar Chaos #137)
Puppet Conjurer (Shards of Alara #82)
Replicating Ring (March of the Machine Commander #372)
Rite of the Raging Storm (Murders at Karlov Manor Commander #159)
Sarcomancy (Tempest Remastered #115)
Séance (Shadows of the Past #12)
Shrine of Loyal Legions (New Phyrexia #155)
Skyline Despot (Commander Masters #254)
Sporesower Thallid (Time Spiral Remastered #231)
Tetravus (Renaissance #161)
Thallid Devourer (Fallen Empires #75)
Utopia Mycon (Time Spiral Remastered #244)
Vilespawn Spider (Innistrad: Crimson Vow #250)
Wolf-Skull Shaman (Morningtide #140)

The message was clear to Sorin—time to search for something else.