It consumes every 1,6s a point of Holy Power to stay active. It is the only ability that reduces Crusader/Templar Strikes CD by 75% while active. And it has a use-cooldown of 2 Minutes.
It is SO NICHE now that it isn’t worth using.
Since Templar Strikes and Crusader Strike can’t have anymore 2 charges, those variants feel already weak. But that you have to skill into this dead-nerf Divine Hammers version now feels really 
.
Like, at this point I would rather have taken a damn damage nerf to us Retribution Paladins than taking away our ability to spam attacks and have a high attack cadence.
Before the update, I felt like a Paladin empowered by the Light. Now I feel like a Warrior swinging around a Weapon that was blessed by the Light… Not fun.
Please reduce Divine Hammers CD down to 1:30/1:00 minutes and remove the holy power draining and instead make the ability cost 3 holy power directly. Because that drain isn’t really managable.
OR
Make it drain 1% mana instead every 1.5s until you either run out of mana or disable the spell manually.
You get punished if you use it with 1 Holy power and rewarded if you hog your class combo points instead. This ability, which replaces consecration, shouldn’t feel that type of “I need to play perfect”. As far as I know it was originally meant as an ability to make Paladins “less restricted” to their stationary Consecration.
Now it is doing the exact opposite of it. Either you fully center your rotation around Divine Hammers or you can go back to sucking it up with Consecration (which I did btw. not wasting my talent points with that spell any second further).