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Is there any real point in the Liche Priest's MM? It seems like their incantations may be better put to use with the support...
It's situational. Most of the time, yes you can better use your spells to support your army. However, for example, in one game I had a Wood Elf alter Highborn getting ready to charge my HLP the next turn, so I shot off 2 rounds of Vengeance at him, and bam he's dead. In that situation, I would say it was better to kill the Lord than to do something else, like heal a skeleton block etc. Also it can be useful to ignore certain units armour saves, or to damage ethereal units if you have no magic weapons nearby.
your right it is kind of a waste ATM until they can get a new book. For me its mostly urgence or smite with the occasional summoning. I've rarely used the spell you mentioned.
Its situational. I remember shooting down a gyrocopter with a few of them after the archers repeatedly bounced off it
Most of the time, I forget its even there, I can just always find a better spell to use. Occasionally it would be ok, you wouldn't want to sacrifice important move spells to use it though. And its good for shooting down fast cavalry/warmachine hunters.
Also, could be good combined with an urgency. Blast the target first, then urgency a unit in. Even if you only kill 1 or two, you now have a rank up and outnumber in the combat so you have a much better chance of autobreaking them.
i was playing dark elves the other day and his lord was really annoying me, it was only a thousand points but he kept making his lord leave his unit and attack little things, so i used the mm and the rest of his army ran off the board, it can be really usefull if u use it at just the right time
It's another option. That's really the only point of it; you should always have a use for every incantation every turn. That ethos is the core to Tomb Kings as far as I'm concerned, and sometimes a weak magic missile aimed at a single (or a few weak) models is the perfect tool. It's also another method of sucking up some dispel dice.