21 cards where the artist name includes “uta natsume”

Ajani, Mentor of Heroes (Secret Lair Drop #397)
Aminatou, the Fateshifter (Secret Lair Drop #1421)
Angrath, the Flame-Chained (Secret Lair Drop #398)
Ashiok, Dream Render (Secret Lair Drop #399)
Chandra, Flame's Catalyst (Secret Lair Drop #1420)
Daretti, Ingenious Iconoclast (Secret Lair Drop #1422)
Drana, the Last Bloodchief (Secret Lair Drop #1684)
Elspeth, Sun's Champion (Secret Lair Drop #1140)
Garruk Wildspeaker (Secret Lair Drop #1142)
Karn, Scion of Urza (Secret Lair Drop #1419)
Lavinia, Azorius Renegade (Secret Lair Drop #1685)
Narset, Parter of Veils (Secret Lair Drop #1141)
Nicol Bolas, God-Pharaoh (Secret Lair 30th Anniversary Countdown Kit #2017)
Omnath, Locus of Creation (Secret Lair Drop #1686)
Orvar, the All-Form (Secret Lair Drop #1683)
Reya Dawnbringer (Secret Lair Drop #1682)
Saheeli, Sublime Artificer (Secret Lair Drop #1143)
Sarkhan Vol (Secret Lair Drop #1144)
Sorin, Grim Nemesis (Secret Lair Drop #400)
Tamiyo, the Moon Sage (Secret Lair Drop #396)
Venser, the Sojourner (Secret Lair Drop #1423)

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