17 cards where (the set is “thb” or the block is “ths” or the lore includes “theros”) and the lore includes “xenagos”

Annul (Theros #38)
Destructive Revelry (Theros #192)
Ecstatic Piper (Defeat a God #3)
Eidolon of the Great Revel (Masters 25 #128)
Fanatic of Xenagos (Born of the Gods #147)
Impulsive Return (Defeat a God #10)
Mischief and Mayhem (Born of the Gods #126)
Reckless Reveler (Battlebond #183)
Revel of the Fallen God (Journey into Nyx #155)
Rollicking Throng (Defeat a God #2)
Rollick of Abandon (Journey into Nyx #108)
Satyr Hoplite (Journey into Nyx #110)
Xenagos Ascended (Defeat a God #1)
Xenagos, God of Revels (Born of the Gods #156)
Xenagos's Scorn (Defeat a God #12)
Xenagos's Strike (Defeat a God #13)
Xenagos, the Reveler (Theros #209)

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