19 cards where the illustration contains “black-fingernail”

Cackling Witch (Mercadian Masques #119)
Cathartic Adept (Shards of Alara #34)
Diabolic Servitude (Urza's Saga #130)
Goblin Warrens (Fallen Empires #59)
Go for the Throat (Commander 2017 #114)
Mirran Mettle (Mirrodin Besieged #84)
Moriok Reaver (Scars of Mirrodin #70)
Necrogen Censer (Scars of Mirrodin #184)
Painful Quandary (Scars of Mirrodin #73)
Painsmith (Scars of Mirrodin #74)
Phyrexian Unlife (New Phyrexia #18)
Reconnaissance (Secret Lair Drop #1575)
Skullsnatcher (Betrayers of Kamigawa #84)
Sovereign's Bite (Core Set 2019 #120)
Timetwister (Limited Edition Alpha #84)
Torment (Stronghold #73)
Trigon of Corruption (Scars of Mirrodin #213)
Trigon of Infestation (Scars of Mirrodin #214)
Voracious Null (Battle for Zendikar #125)

Their mind whirled with grand plans, never thinking of what might happen if they got to the end of the list.