Barbed Armor
Whenever you are attacked, deal 3 damage back to the attacker.
Implementation
Card_BarbedArmor — Repository
Stat Repository:
Card_BarbedArmor
Thorns—3- Exhaust—
1 - Energy Cost—
1 - Card Type—
Power
Playing the card raises Thorns_3. The shared 
ThornsCounterEffect attaches a CounterEffect to the player's Health; whenever damage is taken it fires back at the attacker for the Thorns amount:
ThornsDamage — Effect
Effect:
ThornsDamageTarget Stat:
HealthValue:
Thorns