I actually do that with alot of my toon's spells Akoko. Prot has a /click macro setup to click a /castsequence I came up with, Avenger's Shield, and Hammer of Wrath all at the same time. Here's his setup:

Single Target Spam Button: on button 1
/startattack
/click BT4Button 9
/click BT4Button 11
/click BT4Button 12

Mob Spam Button: on button 2
/startattack
/click BT4Button 10
/click BT4Button 11
/click BT4Button 12

On 9:
/castsequence reset=3 Crusader Strike,Judgement,Crusader Strike,Shield of the Righteous,Crusader Strike,Shield of the Righteous,Crusader Strike,Judgement,Shield of the Righteous,Crusader Strike,Holy Wrath,Shield of the Righteous

On 10:
/castsequence reset=3 Hammer of the Righteous,Judgement,Hammer of the Righteous,Inquisition,Hammer of the Righteous,Inquisition,Judgement,Hammer of The Righteous,Inquisition,Hammer of the Righteous,Holy Wrath,Hammer of the Righteous,Inquisition

On 11:
Avenger's Shield spell only

On 12:
Hammer of Wrath spell only

AS procs so much from Hammer of the Righteous and Crusader Strike attacks, that I use it just as much as my HotR/CSs in the sequences. With Inq in there, it boosts the Holy Power damage from it as well allowing me alot of damage management over SotR on mobs. It also makes a good filler on both rotations for any occasion.