“The walls of this alleyway are coated in a web of veined leather that radiates from a mass that might have once been a storefront. As you pass through, you bump against a man-sized lump protruding from the wall. It appears to be human in shape, as if someone made life sized doll of a screaming man out of leather. Suddenly your armor begins to tighten and spread across your body. Leather spreads down your arms and legs and up your neck contracting as it goes……”
Targets: Anyone wearing leather armor
Stage 1:Make a Strength saving throw or Escape check, DC 18
“You rip away the leather of your armor as quickly as it grows as you retreat from the alley, you are forced to tear your way out entirely but at least you can breath.”
Lose armor. End encounter
"It grows over your face; covering your eyes, nose and mouth.”
Proceed to Stage 2.
Stage 2: Make a Constitution saving throw DC 15.
“You manage to take a breath and close your mouth before everything goes dark”
Move to final stage:
“Leather grows up your nose and into your mouth, forcing your jaw open wider and wider as it expands.”
Take 1d10 damage and disadvantage on future Constitution checks. Move to final stage.
You cannot move or breath. You are paralyzed and must make a DC 10 Constitution check every round. After 3 failures you drop to zero hit-points unconscious. After 5 failures you die.
Escape: An ally must cut your free or tear the armor away. It is a DC 13 Strength check to tear you free or a DC 13 Dexterity check to cut you free. If they roll a 5 or lower, then they are immediately subjected to the stage 1 effect as the leather spreads to them as well. The helper can gain advantage on the roll by using a weapon that deals slashing damage and cutting furiously, dealing critical hit damage automatically.
Special [Leathery Flesh Reward]: A character with this reward has their skin transformed to have toughness and texture of sturdy leather and has a base AC of 13+Dexterity when not wearing other armor. They are immune to the effects of this encounter.