An Eclectic Collection of Fun and Effective Builds 3

[LudicSavant]

How important are the Life Cleric level and the Mark of Healing for this build? I am planning to play a Celestial Warlock, but would probably go for a level of Peace Cleric and the Mark of Hospitaliy for RP reasons.

And I would also switch out Summon Greater Demon since it isn't fitting the character. Which of the other Summon Spells could replace it? Maybe Undead or Fey?

Peace + Mark of Hospitality sounds like it'd work fine. Less healing obviously, but Peace 1 is an incredibly strong dip in its own right.

As for picking up a new spell, all of the Tasha's summons on the Warlock spell list are fairly solid choices, but one that offers a ranged attack (like Summon Aberration or Summon Undead) would probably be my first recommendation for this build. But you could also lock down with Shadowspawn or throw Fey at people (though watch out for BPS resistance with the fey. Only a little of their damage is Force, and their attacks may not be considered magical). Feel free to go with the one that you feel fits your character.