witch spells prepared

[master_marshmallow]

Working on a Boss Fight for my players, no idea what the good witch spells are.

Gravewalker witch, so most of the patron spells are replaced with animate dead, create undead, and the like.

Feats

Spoiler:

Improved Initiative (Mythic); Accursed Hex (Mythic); Undead Master (Mythic); Split Hex; Quicken Spell; Eschew Materials; Split Major Hex; Persistent Spell; Ability Focus (Slumber); Toughness; Mythic Spell Lore

Mythic Stuff

Spoiler:

Wild Arcana; Enduring Armor; Flexible Counterspell; Resilient Arcana; Mythic Spell Power; Enhanced Ability (Intelligence); Arcane Metamastery (4x)

Level 20, MT 9. Build is meant to be simple and not OP to not overwhelm the players too much.

stats after items are: 8 28 18 40 10 12

Hexes (DC 35)

Spoiler:

Aura of Desecration (70 ft); Slumber; Bonethrall; Flight; Possess Undead; Ice Tomb; Retribution; Cackle; Misfortune; Agony; Death Curse

Aside from stat items, I have no items on this build, nor have I chose a patron.

Intended allies are a city full of animated corpses, a witchguard ranger (with much less MTs), and an adult green dragon with class levels bringing his CR up, presumably a dip in fighter/bloodrager, and the rest in eldritch knight.

So yeah, need a prepared spell list, or at least advice on where to go with it. I think the patron should be one that is also useful for the ranger, so I'm thinking one of the ones either with Haste, or the one with Divine Power.

EDIT: If it matters, she is a floot of foot, dreamspeaker elf.

[Cevah]

I don't play that high, but even so....

Choose spells that leave good corpses. Animate them as the party watches, unable to do anything about it. Be sure the treasure has a way to undo this, unless it is the end of the campaign.

Unhallow is thematic for this character.

For battlefield control, darkness and fog are nice and spooky as well as effective.

For grins, just before the party approaches, cast passwall on the ground and have a few undead go in. Hide and have them climb out when the party is about to enter.

Pick your ground well. A graveyard would be nice.

Some allied Ghouls could be the mooks for the Boss. Shadows and Wights can be mini-bosses.

/cevah