In your case shield bash is a pretty wrath hungry skill, so the resource cost reduction of crimson should help a lot.

the resource cost reduction component of captain crimson set can also be useful for some builds that require wrath consumption, but even for no resource builds like invoker, captain crimson is still used because it’s just that good.

the crimson set is particularly good for crusaders because of the huge cooldown reduction → every crusader build uses multiple cooldown skills, especially akarat’s champion.

with ring of royal grandeur (RROG, act 1 bounty bag) in your jewelry cube slot you can equip 5 pieces of a crusader set and 2 pieces of the captain crimson set to get both the 6 piece bonus of the crusader set AND the 3 piece bonus of the captain crimson set.

this set has belt + pants + boots pieces.

the captain crimson set crafting plan drops from bounty bags.

invoker or valor) and 2 pieces of the “captain crimson trimmings” set, except for the LOD/LON bombardment build that can’t use set bonuses outside of the LON rings

Every crusader build runs 5 pieces of a particular set (e.g.

There’s one more thing I want to note if you are new to crusader builds:

Both the equipped weapon and cube weapon/shield slots are open. Shield bash only has two supporting items, so you have lots of flexibility here.

Diablo 3 crusader sets