8 cards where the name includes “ob” and the name includes “nixilis”

Ob Nixilis, Captive Kingpin (March of the Machine: The Aftermath #41)
Ob Nixilis of the Black Oath (Commander Masters #176)
Ob Nixilis Reignited (Commander 2021 #149)
Ob Nixilis's Cruelty (War of the Spark #101)
Ob Nixilis, the Adversary (Streets of New Capenna #206)
Ob Nixilis, the Fallen (Iconic Masters #101)
Ob Nixilis, the Hate-Twisted (War of the Spark #100)
Ob Nixilis, Unshackled (Double Masters 2022 #84)

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