20 cards where the cards are available in foil and the set is “c16”

Akiri, Line-Slinger (Commander 2016 #26)
Atraxa, Praetors' Voice (Commander 2016 #28)
Breya, Etherium Shaper (Commander 2016 #29)
Bruse Tarl, Boorish Herder (Commander 2016 #30)
Ikra Shidiqi, the Usurper (Commander 2016 #32)
Ishai, Ojutai Dragonspeaker (Commander 2016 #33)
Kraum, Ludevic's Opus (Commander 2016 #34)
Kydele, Chosen of Kruphix (Commander 2016 #35)
Kynaios and Tiro of Meletis (Commander 2016 #36)
Ludevic, Necro-Alchemist (Commander 2016 #37)
Ravos, Soultender (Commander 2016 #39)
Reyhan, Last of the Abzan (Commander 2016 #40)
Saskia the Unyielding (Commander 2016 #41)
Sidar Kondo of Jamuraa (Commander 2016 #42)
Silas Renn, Seeker Adept (Commander 2016 #43)
Tana, the Bloodsower (Commander 2016 #45)
Thrasios, Triton Hero (Commander 2016 #46)
Tymna the Weaver (Commander 2016 #48)
Vial Smasher the Fierce (Commander 2016 #49)
Yidris, Maelstrom Wielder (Commander 2016 #50)

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