Shadowflare is useful for a bit of extra damage, especially on groups of monsters. The slow effect can be handy as well. I find Lustrate rather useful as it's not impacted by Cleric's Stance and is instant cast, allowing me a little more wiggle room to drop into the stance, lay down a few DoTs, and then get out without the tank getting into trouble. Though, that said, Sacred Soil is vital for situations where you know the party will take a lot of damage (Stomps on Titan, the heavy party-wide attacks from primals in general... stuff like that)