54 cards where the set is “moc” and (the collector number >= 80 and the collector number <= 133)

Elspeth's Talent (March of the Machine Commander #80)
Firemane Commando (March of the Machine Commander #81)
Teferi's Talent (March of the Machine Commander #82)
Infernal Sovereign (March of the Machine Commander #83)
Liliana's Talent (March of the Machine Commander #84)
Rowan's Talent (March of the Machine Commander #85)
Vivien's Talent (March of the Machine Commander #86)
Begin the Invasion (March of the Machine Commander #87)
Bright-Palm, Soul Awakener (March of the Machine Commander #88)
Brimaz, Blight of Oreskos (March of the Machine Commander #89)
Elenda and Azor (March of the Machine Commander #90)
Gimbal, Gremlin Prodigy (March of the Machine Commander #91)
Kasla, the Broken Halo (March of the Machine Commander #92)
Moira and Teshar (March of the Machine Commander #93)
Rashmi and Ragavan (March of the Machine Commander #94)
Saint Traft and Rem Karolus (March of the Machine Commander #95)
Shalai and Hallar (March of the Machine Commander #96)
Sidar Jabari of Zhalfir (March of the Machine Commander #97)
Chivalric Alliance (March of the Machine Commander #98)
Conjurer's Mantle (March of the Machine Commander #99)
Darksteel Splicer (March of the Machine Commander #100)
Excise the Imperfect (March of the Machine Commander #101)
Filigree Vector (March of the Machine Commander #102)
Guardian Scalelord (March of the Machine Commander #103)
Nesting Dovehawk (March of the Machine Commander #104)
Path of the Ghosthunter (March of the Machine Commander #105)
Vulpine Harvester (March of the Machine Commander #106)
Wand of the Worldsoul (March of the Machine Commander #107)
Deluxe Dragster (March of the Machine Commander #108)
Herald of Hoofbeats (March of the Machine Commander #109)
Path of the Enigma (March of the Machine Commander #110)
Schema Thief (March of the Machine Commander #111)
Blight Titan (March of the Machine Commander #112)
Exsanguinator Cavalry (March of the Machine Commander #113)
Locthwain Lancer (March of the Machine Commander #114)
Path of the Schemer (March of the Machine Commander #115)
Dance with Calamity (March of the Machine Commander #116)
Death-Greeter's Champion (March of the Machine Commander #117)
Hedron Detonator (March of the Machine Commander #118)
Mirror-Style Master (March of the Machine Commander #119)
Pain Distributor (March of the Machine Commander #120)
Path of the Pyromancer (March of the Machine Commander #121)
Uncivil Unrest (March of the Machine Commander #122)
Conclave Sledge-Captain (March of the Machine Commander #123)
Emergent Woodwurm (March of the Machine Commander #124)
Path of the Animist (March of the Machine Commander #125)
Sandsteppe War Riders (March of the Machine Commander #126)
Cutthroat Negotiator (March of the Machine Commander #127)
Flockchaser Phantom (March of the Machine Commander #128)
Mistmeadow Vanisher (March of the Machine Commander #129)
Vodalian Wave-Knight (March of the Machine Commander #130)
Wildfire Awakener (March of the Machine Commander #131)
Bitterthorn, Nissa's Animus (March of the Machine Commander #132)
Ichor Elixir (March of the Machine Commander #133)

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