31 cards where the illustration contains “helix”

Aberrant Mind Sorcerer (Adventures in the Forgotten Realms #44)
Adamant Will (Innistrad: Crimson Vow #1)
Aether Vial (Kaladesh Inventions #6)
Botanical Sanctum (Kaladesh #244)
Chulane, Teller of Tales (Throne of Eldraine #326)
Circle of Solace (Onslaught #13)
Decoction Module (Kaladesh #205)
Dragon's Eye Savants (Khans of Tarkir #38)
Drain Power (Limited Edition Alpha #56)
Elvish Archdruid (Duel Decks: Elves vs. Inventors #5)
Energy Arc (Alliances #106)
Exquisite Firecraft (Magic Origins #143)
Familiar's Ruse (Lorwyn #64)
Flames of the Firebrand (Magic 2013 #132)
Food (Throne of Eldraine Tokens #16)
Foundry Helix (Modern Horizons 2 #196)
Helix Pinnacle (Eventide #68)
Immolating Gyre (Jumpstart #20)
Life Matrix (Legends #284)
Lightning Helix (Ravnica: City of Guilds #213)
Lightning Helix (Secret Lair 30th Anniversary Countdown Kit #2005)
Lightning Helix (Magic Player Rewards 2006 #7)
Manamorphose (Shadowmoor #211)
Mishra's Helix (Urza's Saga #302)
Negate (Aether Revolt #40)
Prophetic Flamespeaker (Journey into Nyx #106)
Retraction Helix (Born of the Gods #49)
Spiraling Embers (Saviors of Kamigawa #116)
Tempt with Reflections (Commander 2013 #60)
Trepanation Blade (Innistrad #235)
Wheel of Sun and Moon (Shadowmoor #243)

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