The Golden Dragon

In the depths of the Black Pyramid of the Grinning Pharaoh, secreted far underground by the long dead kingdom of Uldru, in a black chamber where a black statue of a screaming pharaoh reclines gargantuanly, the players fought their once allies, the duplicitous priest Claptrous Orng and duplicitous snake-man Lithrezeck. Even with his last breath the priest lied, and the snake-man shrieked his right to the Screaming Serpent Staff, and bit at his foes. They died, but managed to barely open one door into an innermost chamber of the pyramid, whose ancient mechanisms worked only well enough to crack it.

"Phew, let's take a rest. Should we rest here?"
"Maybe we should make sure the next room is safe first"
"I'll take a quick look"

Dirtface crawls on his belly into the crack, in one hand thrusting forth a gleaming skull, whose shining eyes light upon more wealth than he has ever seen: an ocean of gold, weaponry, armaments, and jewels, gold, glittering from all corners of the massive room, and the golden pantheon of the Psychodesert presiding, jackalmen, scarabmen, falconmen, sphinxes, skeleton headed pharaohs, all grinning -- (at this point Dirtface's player, Nick, to my delight, says "Oh no") -- and atop the bed of gold a dragon, all of gold, but fairly small (maybe the size of two lions) lifts its head, adjusts its wings, uncoils its tail, and looks at Dirtface. Its claws and horns and hide glitter. Dirtface loses initiative. The dragon breathes fire.

"Okay, make a Dexterity saving throw, difficulty 22. Failure? Okay, you take 96 damage"
We wait a beat
Nick: "9d6 damage, right? How much damage was that?"
Me, delighted again: "Oh no, 96"

At this point, sirens start from somewhere out of sight. The eyes of the gold statues light up. The ceiling begin to strobe a flashing white. A low beat is drumming from another room. The sirens get louder. The dragon is screaming and standing up. The 50 foot tall jackal-head statues in a previous room, their eyes are lighting up and they're starting to move, creakily.

"We need to get out of here"

So they do, quickly, via teleport, but not before Sad Ed the Bard casts a spell to close the door to the dragon's room.

Next session: "Alright, Sad Ed, you're walking down the hallway, Dirtface is sneaking 20 feet in front of you. You feel yourself gripped by a pair of claws, you're lifted into the air. Hanging from the ceiling above you is the golden dragon. Its tail and wings are unfolding from the darkness where it was hiding. An unbearable heat is coming off its hide. You take 19 damage . . ."
Thomson, Sad Ed's player: "Wait, I closed the door. Even though I closed the dragon's door?"
"Yeah, sorry. It was a good idea. Go ahead and roll for initiative."

A solid hour of panic ensues, but they manage to escape again.

Thomson: "I'm afraid it's hunting our gold."
Me: "Apropos of nothing, where do you keep your gold?"
Thomson: "There's like a blank space right between my shoulders where I reach back for my stuff..."
"Ah, inventory null space. Alright good to know."

So now they're being hunted by a dragon.