Units with this trait can take the listed value at most in Damage, when hit by the Enchanted Salt attack.

For those who don't know, the actual Damage you take from Salt is capped after its Damage Roll, and independently from its attack Damage (which is 1). For units without Salt Vulnerability, the cap is zero.

Salt can also Stun Vulnerable and non-Vulnerable targets, with the same chances as Shock Damage. The Stun chance is calculated before Salt Vulnerability is taken into account.