It appears in 3.0 we are burning through our smite pool even if we do not complete an attack. In short, it looks like each time you type "Smite" it burns your soul pool even if you do not attempt an attack. See log:

You begin to advance on Zerreck.
>
Zerreck appears to be aiming at you with his tei'oloh crossbow.

An ephemeral light glows about you blunting the blow.
Your silver glow flares.
The air around you solidifies into a bright yellow glow and intercepts the attack with a shower of coruscating light.
* An arisen goblin zombie pounds at you. You fail to evade.
The fist lands a harmless strike to your right arm.
[You're solidly balanced with opponent in better position.]

> smite zer
You chant a brief litany and draw back with a divinely inspired strike!
You aren't close enough to attack.
You are already advancing on Zerreck.
> smite zer
The whirlwind of pearlescent silver-grey mist pulses hard before expanding in size, lashing out at everything within reach!
>
> smite zer
You chant a brief litany and draw back with a divinely inspired strike!
You aren't close enough to attack.
You are already advancing on Zerreck.
> You chant a brief litany and draw back with a divinely inspired strike!
smite zer
You aren't close enough to attack.
You are already advancing on Zerreck.
>
You chant a brief litany and draw back with a divinely inspired strike!
You aren't close enough to attack.
You are already advancing on Zerreck.
> smite zer
You chant a brief litany and draw back with a divinely inspired strike!
You aren't close enough to attack.
You are already advancing on Zerreck.
> smite zer
Liurilias bows his head and chants a mantra.
>
You chant a brief litany and draw back with a divinely inspired strike!
You aren't close enough to attack.
You are already advancing on Zerreck.
> smite zer

> smite zer

>
The dirt construct closes to pole weapon range on you!
>
>
You chant a brief litany, but realize you can not muster a smite so soon after your last.
>
You chant a brief litany, but realize you can not muster a smite so soon after your last.
> smite zer
You chant a brief litany, but realize you can not muster a smite so soon after your last.
> smite zer


Madigan