If you eat a lizard’s brain while turning to stone, it cures your stoning.

Variant of Fort Ludios that contains Midas instead of Croesus. Midas has a petrification touch, but instead of turning you to stone slowly, it turns you to gold and creates a gold statue of you. Midas uses gold golems for his forces instead of dragons.

The ring of warning, and only that, should indicate the exact amount of turns you have left to live when afflicted by a timed instadeath such as sliming, stoning, or strangulation. (And drowning and other forms of suffocation in variants that have that.) This feedback is conveyed by the ring vibrating that number of times, e.g. “Your [ring] vibrates twice.” Possibly it should only happen when the amount of turns to live is low because it doesn’t make that much sense for it to vibrate 20 times in one turn and have the hero count that accurately.

Archons’ light radius should be a passive aura area-of-effect attack that causes strong light effects: potentially blinding normal monsters, hurting gremlins and undead, petrifying trolls, and so on.

5% of the time when Medusa is decapitated, she drops a “head of Medusa” item which can be wielded and used to petrify monsters, but only if the hero is blind (attempted use of it when not blind will petrify the hero).

Free action enables you to move on turns you would normally miss due to being turned to stone, effectively giving you more actions to save yourself.

If you are turning to stone and take acid damage from any source, the stoning is stopped.

If you deliver a staggering blow or other knockback to a cockatrice, and there is a monster behind it, that monster might get stoned.

Petrification sources need to be made more consistent - logically, “The cockatrice touches you!” should have the same effect as touching its corpse, but instead it is a mere 1/30 chance of starting a delayed petrification.

Trollsbane can be invoked to instapetrify all trolls in a radius of 5.

The “weakest” beatitude of the potion of acid (usually blessed in vanilla, but if #1918 is implemented it will be cursed) may not cure stoning.

Unchanging prevents you from starting to turn to stone (it already prevents starting to turn to slime), and if you are in the process of turning to either, it halts the process but does not cure it.

Give a YAFM if you would “sink like a rock” while currently turning to stone, or polymorphed into a stone monster (gargoyles, earth elemental, stone golem).

• if petrifying: “You sink like a rock, because you are becoming one.”
• if a stone monster: “You sink like a rock, because you are one.”

Yellow dragon scale mail gives petrification resistance instead of (or possibly in addition to) acid resistance.

Eating a cockatrice corpse only petrifies you 85% or so of the time, the rest of the time it “tastes like chicken”.

Petrification is a contact poison secreted by cockatrices, and only partially stones the body part it touches. If you touch one with your hands, you cannot use your hands anymore, etc.

Stepping on a square containing a cockatrice corpse while not wearing boots instantly stones you.

Throwing a tin of cockatrice meat at a monster who will normally eat through the metal will instantly stone it, if the monster is stoneable.

Lizard scales, available as a drop from killing a lizard, are wearable as AC 1 body armor. They can be upgraded into lizard scale mail, which has AC 3. This armor protects you from petrification.

New artifact Aegis: is a bronze roundshield (which is supposed to have Medusa’s or another gorgon’s face impressed on the front). Can be invoked sideways at a monster, which petrifies it or, failing that, causes it to flee (regardless of difficulty or monster MR). Can be invoked downwards to burn a Gorgoneion in the floor. Possibly grants stoning resistance or gaze resistance while equipped.