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When a Liche Priest or Liche High Priest takes a Casket of Souls, does the Casket deploy alone when other warmachines are deployed and then the Liche joins it when characters are deployed (because the casket is a warmachine and takes a rare slot), or does the Liche and Casket deploy together when characters are deployed (because the casket is essentially a 'warmachine mount' for the Liche)?
Also another one I just thought of:
If a unit has the magic banner that gives +1 to hit in the first round of combat charges an enemy unit and subsequently has a smiting spell cast on it, will the free attacks be at +1 to hit?
Yes, the Casket counts as a War Machine for deployement purposes so it would be deployed without a Liche Priest who joins it when characters are put out. Though I doubt most opponents would object if the Priest was deployed with it as it won't be giving you any advantages or disadvantages.
Yes, they benefit from the +1 to hit as the desciption of the spell says they benefit from all advantages of charging if they charged before the spell was cast.
Do not question the dice gods for their wrath is swift and terrible.