20 cards where the set is “sld” and the collector number >= 501 and the collector number <= 536 and the rarity is equal to uncommon

Angrath, Captain of Chaos (Secret Lair Drop #527)
Arlinn, Voice of the Pack (Secret Lair Drop #516)
Ashiok, Dream Render (Secret Lair Drop #528)
Davriel, Rogue Shadowmage (Secret Lair Drop #509)
Dovin, Hand of Control (Secret Lair Drop #529)
Huatli, the Sun's Heart (Secret Lair Drop #530)
Jaya, Venerated Firemage (Secret Lair Drop #513)
Jiang Yanggu, Wildcrafter (Secret Lair Drop #517)
Kasmina, Enigmatic Mentor (Secret Lair Drop #507)
Kaya, Bane of the Dead (Secret Lair Drop #531)
Kiora, Behemoth Beckoner (Secret Lair Drop #532)
Nahiri, Storm of Stone (Secret Lair Drop #533)
Narset, Parter of Veils (Secret Lair Drop #508)
Ob Nixilis, the Hate-Twisted (Secret Lair Drop #511)
Saheeli, Sublime Artificer (Secret Lair Drop #534)
Samut, Tyrant Smasher (Secret Lair Drop #535)
Teyo, the Shieldmage (Secret Lair Drop #504)
The Wanderer (Secret Lair Drop #505)
Tibalt, Rakish Instigator (Secret Lair Drop #515)
Vraska, Swarm's Eminence (Secret Lair Drop #536)

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