Diablo Wiki
Towering Shield Towering Shield
All damage dealt by Punish, Shield Bash, and Blessed Shield is increased by 20%. Cooldown of Shield Glare is reduced by 30%.

A crusader's shield is one with his body.

Towering Shield is a passive Crusader skill, unlocked at level 70.

The latter effect is multiplicative to other similar modifiers, but the former stacks additively with other bonuses to damage dealt by the aforementioned skills.