Long time lurker. Love this functionality. If you’re looking for a way to make use of the Spirit Beast heal, and maybe boost your cred a bit in the logs…
/focus [@targettarget] /cast [@focus, exists, nodead] [target=player] Spirit Mend
This will focus whatever your target is hitting, usually the tank.
Then it casts Spirit Mend on focus, or if there is no focus, you.
Therefore it is useful in group or solo content.
It is what it is.