32 cards where the artist name includes “yanner” and the card types include “planeswalker”

Ajani Unyielding (Aether Revolt #127)
Basri Ket (Core Set 2021 #7)
Chandra, Hope's Beacon (March of the Machine #134)
Deb Thomas (Celebration Cards #9)
Dovin, Architect of Law (Ravnica Allegiance #265)
Dovin, Grand Arbiter (Ravnica Allegiance #167)
Dovin, Hand of Control (War of the Spark #229)
Dovin, Hand of Control (Secret Lair Drop #529)
Freyalise, Llanowar's Fury (Commander Collection: Green #1)
Gideon Blackblade (Secret Lair Drop #503)
Gideon Blackblade (Mythic Edition #WS2)
Gideon, the Oathsworn (War of the Spark #265)
Jace, Arcane Strategist (War of the Spark #270)
Jace, Cunning Castaway (Ixalan #60)
Jace, Unraveler of Secrets (Amonkhet Remastered #65)
Jaya Ballard (Mythic Edition #RA4)
Karn Liberated (Secret Lair Promo #36)
Koth, Fire of Resistance (Store Championships #9)
Liliana, Death Mage (Core Set 2021 #328)
Liliana, the Last Hope (Mythic Edition #GR2)
Lukka, Coppercoat Outcast (Ikoria: Lair of Behemoths #276)
Mila, Crafty Companion // Lukka, Wayward Bonder (Strixhaven: School of Mages #153)
Mila, Crafty Companion // Lukka, Wayward Bonder (Strixhaven: School of Mages #153)
Nahiri, the Harbinger (Mythic Edition #WS7)
Professor Onyx (Strixhaven: School of Mages #83)
Professor Onyx (Strixhaven: School of Mages #276)
Ral, Caller of Storms (Guilds of Ravnica #265)
Ral, Izzet Viceroy (Guilds of Ravnica #195)
Sarkhan the Masterless (War of the Spark #143)
Sarkhan the Masterless (Secret Lair Drop #514)
Sorin Markov (Mythic Edition #RA3)
Tamiyo, Field Researcher (Innistrad Remastered #249)
Teyo, Geometric Tactician (Commander Masters #725)

Though this query has ended, its relics still slumber in New Argive.