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ARCTURIA
ARCTURIA
Arcturia is a Heh, with these changes:
- In addition to her walking speed, Arcturia has a flying
speed of 60 feet and can hover. - She can cast the alter self spell at will and uses the
following list of prepared spells:
Cantrips (at will): mage hand, prestidigitation, ray of frost
1s t level (4 slots): detect magic, magic missile, shield,
thunderwave
2nd level (3 slots): detect thoughts, enlarge/reduce, Melfs acid
arrow, mirror image
3rd level (3 slots): counterspell, dispel magic, fireball, slow
4th level (3 s lo t s): blight, polymorph
Sth level (3 slot s): animate objects, telekinesis
6th level (1 s lot): disintegrate,jlesh to stone
7th level (1 slot): reverse gravity, teleport
8th level (1 slot):feeblemind, maze
9th level (1 s lo t): true polymorph
Unable to abide normalcy and consistency, Arcturia
fixates on transforming herself, her surroundings, and
other creatures. Her moods are ever-changing as well.
If the characters destroyed her phylactery on level 14,
Arcturia knows what they did and attacks them at once.
Otherwise, she has no grievance with the adventurers
and is happy to let them go on their way, neither helping
or hindering their efforts.
ANIMAL-HEADED HUMANOIDS
Like Rabbithead in area 14, these six creatures are an-
imals transformed into humanoids by Arcturia's magic.
They have the following traits in common:
- They are unaligned.
- They can't speak and know no languages.
The three humanoids wearing armor are champions
(see appendix A) with the heads of a dingo, an iguana,
LEVEL 23 I MAD WTZARD'S LAlR
and a stork. If Arcturia becomes embroiled in a battle,
two of them fight on her side. The one with the dingo
head, who secretly despises Arcturia, sides with her en-
emies against her. Each guard carries a yellow sapphire
(see "Treasure" below).
The three servants are unarmed commoners with the
heads of an aardvark, a moth, and a shrew. Whenever
Arcturia snaps her fingers and points to a spot in the
room, these servants begin dusting that location and
don't stop until she snaps her fingers again. They other-
wise avoid combat.
SOUTHEAST DOOR
This door has a stone wall behind it, inscribed upon
which is an elder rune (see "Elder Runes," page 12).
Determine the rune randomly by drawing a card from
the Elder Rune Deck (see appendix B). The rune targets
the creature closest to the open door. It then vanishes
until the door is closed, whereupon another elder rune
appears in its place.
TREASURE
The harp played by the butterfly swarm is an instrument
of the bards (Anstruth harp).
The yellow sapphires carried by the animal-headed
guards fit into the pillars in area 8. Each gemstone is
worth 1,000 gp.
- ANIMAT E D HALLWAY
This 250 -foot-long, downward-sloping hallway has
been set into permanent animated motion by Halaster's
magic. It twists and undulates continuously, making it
tricky to negotiate. Any creature that enters the corridor
or starts its turn there must succeed on a DC 15 Dex-
terity saving throw or take 5 (ldlO) bludgeoning dam-
age as it is knocked about. If the creature is standing,
walking, or running on the floor, the ceiling, or a wall
when it fails this saving throw, it tumbles 20 feet down
the tunnel before landing prone. A flying creature has
advantage on the saving throw and doesn't tumble or fall
prone if it fails the save. - DOUBLE DOOR ROULETTE
Double Doors. Seven sets of double doors, six of them
at the end of short hallways, stand closed.
Scintillating Pillar. A pillar at the center of the 20-foot-
high room has deep notches cut into it, which pulse
with a shifting rainbow of light.
Behind most of the double doors are blank stone
walls. Only the southern set of doors holds a path
forward: pulling open these doors reveals area 22 be-
yond. Creatures that pass through the doorway get no
sense that they're leaving Undermountain and entering
Halaster's extradimensional tower.
Whenever a double door in this area is opened-ex-
cept the one to the south (see above)-the pillar emits
colored rays from its myriad notches, duplicating the
effect of a prismatic spray spell (save DC 22) that targets
all creatures within 60 feet of the pillar. Any creature
that would be transported to another plane by this ef-
fect instead appears in the arms of the Halaster statue
in area 22.
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