A player asked for some Dark Sun specific curses and epithets so I made these up. Add your own in the comments.
By the Dark Sun’s rays!
By Ral’s orange gaze!
In Guthay’s pale light!
By the Dragon’s wrath!
Sandstorm take you!
May the desert sands suffocate you!
May the silt sea swallow you!
By the Shadow of Rajaat!
Damn your parched soul!
Blood and ashes!
To the Arena with you, fool!
Silt-sucking kank!
By the bones of Dregoth!
By Kalak’s bones!
Thrice-damned defiler!
Cactus-brained fool!
Dune crawler!
You witless sun-scorched …!
By the Spirits of the Land!
Ravager’s breath!
May your water turn to sand!
You kank-faced bastard!
You filthy slave-sucking templar!
Boneclaw!
Braxat-bait!
To the depths of Under-Tyr with you
Dried-up kank droppings!
Siltspawn!
May your brain be devoured by a t’chowb
By the Black!
Desert-addled …half-giant/elf/dwarf, etc!
In the eyes of the Dragon, what were you thinking?
Bleached bones and broken stone!
Sand-blasted idiot!
To the wastes with you!
Mud-brained halfling/elf/dwarf spawn!
Salt-flats be your grave!
Sun-scorched imbecile!
You draji/tyrian/urikite-blooded scum!
Erdlu-dung eater!
By the breath of the Dragon!
You brain-fried psion!
By the crimson sun!
Wind-ravaged waste-dweller!
Templar’s take your tongue!
To the dragon’s maw with you!
By the moons of Athas, you’re doomed!
Parched as a Thrax’s victim!
Sun-blind fool!
You empty-headed braxat!
Defiler-tainted scum!
May the Pristine Tower warp you!
By the Sun’s scorching light!
By the lost cities of the ancients!
Mind-scorched by the psions!
Silt-drowned fool!
To the wastes with your kind!
By the 7 Sorcerer-Kings
May all your oases be dry