Spiny
Anything careless enough to attack a spiny creature in melee will take damage from the defender's spines. Ranged or reaching attacks ignore this counterattack, as do spells.
Monster Version
Each time anything attacks a spiny monster in melee, there is a one in three chance that the attacker will take 5d4 damage. This damage ignores EV, but is reduced by AC. Spiny enemies are also immune to constriction both from the melee attacks of nagas and octopodes and the zombie hands of Borgnjor's Vile Clutch.
Player Version
You can acquire the spiny trait yourself by gaining the demonspawn spiny mutation. Spiny players have a one in two chance to hurt attackers, dealing damage based on mutation rank and experience level:
Minimum damage: mutation_rank Maximum damage: (2 * XL / 3) + 3 * mutation_rank
As with monster spines, this ignores EV. However, you can only affect the first attack of any given monster per round.
Spiny Monsters
P 
Briar patch
C File:Cactus Giant.png Cactus Giant
History
- Prior to 0.27, mutation rank had minimal influence on the player damage formula.
- Prior to 0.26, porcupines, torturous demonspawns, and hell sentinels had spines.
- Prior to 0.19, the player version did damage based only on the mutation rank.
