Bash

Bash is a passive ability that gives a unit chance to deal bonus damage and stun its target on attack. The bash ability can be gained by skills or the items Skull Basher and Monkey King Bar.

Bash is an ability that stuns the target and deals bonus damage.

Melee Units with Bash
Bash cannot stack on melee units. If a unit has an ability that grants bash, it will not benefit from any item that grants bash.

Melee units with bash deal bonus magical damage, but a physical stun. Thus the damage can be reduced by magic resistance and blocked by magic immunity, but the stun cannot be blocked by magic immunity.

Ranged Units with Bash
Bash can stack on ranged units, but with diminishing returns. See: Chance Stacking

Ranged units with bash deal bonus physical damage, but a magical stun. Thus the damage can be reduced by armor, and the stun can be blocked by magic immunity.

Sources of Bash