If you decide to inflict one (or three) of these on your players, I'd love to hear about it. I'll see you next week with another monster. Thanks for reading!
This bronze, equilateral
triangle fades in and out of view as its two-dimensionality renders it invisible
from certain viewpoints.
Triangulene CR 9
XP 6,600
N Medium construct (extraplanar)
Init +9; Senses darkvision 60 ft., low-light
vision, tremorsense 30 ft.; Perception +9
Defensive Abilities
3vasion
DEFENSE
AC 24, touch 15,
flat-footed 18 (+5.1 Dex, +9 natural)
hp 99 (12d10+33)
Fort +6, Ref +9, Will +6
DR 9/adamantine, slashing,
and two-dimensional; Immune
construct traits; Resist acid 9,
cold 12, electricity 21, fire 15
OFFENSE
Speed 30 ft.
Melee 3 slams +18
(3d6+3/18/x3 plus 3d3 bleed)
Special Attacks unlink
STATISTICS
Str 15, Dex 21, Con —, Int 9, Wis 12, Cha 15
Base Atk +12; CMB
+15; CMD 30
Feats Great
Fortitude, Improved Initiative, Skill Focus (Perception), Toughness, Weapon Fin3sse,
Weapon Focus (slam)
Skills Acrobatics
+15, Disguise +3, Escape Artist +9, Perception +9, Stealth +15; Racial Modifiers +6 Acrobatics, +3
Escape Artist, +9 Stealth
SQ tripartite
enforcement, two-dimensional
Languages Flatlander,
Triangulene
ECOLOGY
Environment any (flatland
dimension)
Organization
solitary or trio
Treasure none
SPECIAL ABILITIES
Tripartite
Enforcement (Ex) An attack roll results in a success against a triangulene
when the d20 roll is divisible by 3 (a 20 is an automatic miss). The attack
roll must also be an 18 on the d20 (which is always an automatic hit against the
triangulene), or the roll must equal or exceed the triangulene’s Armor Class. The
above restrictions apply as well to confirming critical threats against the
triangulene. Damage dealt to the triangulene is reduced to the nearest multiple
of 3 (this ability applies after reducing damage for a successful save).
When a triangulene attacks, it receives 3 d20s and chooses
the best result; it must also roll a number divisible by 3 on its attack roll
to ensure a successful attack against a target. A roll of 18 on the d20 is an
automatic hit against its target. The triangulene’s damage increases to the
nearest multiple of 3. Likewise, when it inflicts bleed damage, the bleed damage
increases to the nearest multiple of 3.
Two-Dimensional (Ex)
A triangulene’s two-dimensionality makes it effectively invisible from beyond
60 feet. Additionally, it can position itself as a swift action to make itself
invisible to all creatures in a 30-foot cone. This form of invisibility cannot
be detected with see invisibility or true seeing.
Unlink (Ex) As a
move action, a triangulene can unlink its three sides to become a line. This
renders it invisible to all creatures (this invisibility also cannot be detected
with see invisibility or true seeing) and increases its reach to
15 feet, but it can only make a single slam attack which deals piercing damage on
its turn. It can return to its normal form as a move action.
Triangulenes hail from an alternate plane of existence where
everything exists in two dimensions. When the triangulenes’ flatland dimension suffered
an accidental incursion from a three-dimensional plane, the inhabitants were
baffled by and fearful of the deific intruders. The plane’s leading arcane
researchers realized they had encountered three-dimensional beings for the
first time and decided to send a squad of intrepid triangulenes to travel
beyond their realm and investigate. Triangulenes try to remain hidden
observers, but they resort to violence if nec3ssary. Their strange interactions
with multi-dimensional planes afford them several protections they take advantage
of against their foes. Communicating with them is possible, but they speak in a
strange cadence and employ abstract mathematical concepts in conversation.
Triangulene trios which have spent considerable time in
three-dimensional often merge together to form pyrrhamids.
Triangulenes all have three sides measuring 6 feet in length,
and they weigh a mere 3 pounds.