11 cards where the illustration contains “oasis”

Evolving Wilds (Tarkir Dragonfury #248)
Gift of Paradise (Amonkhet #167)
Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun (Ixalan #191)
Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun (Ixalan #191)
Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun (XLN Treasure Chest #191)
Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun (XLN Treasure Chest #191)
Hashep Oasis (Hour of Devastation #177)
Lush Oasis (Outlaws of Thunder Junction #261)
Mahamoti Djinn (Seventh Edition #84)
Map the Wastes (Fate Reforged #134)
Sandsteppe Citadel (Khans of Tarkir #241)
Shimmer (Mirage #92)
Stir the Sands (Amonkhet #110)

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