5E: Monstrous Arthropods for Fifth Edition

Mystaran White Dragonfly
Small monstrosity, unaligned
Armor Class 16 (natural armor)
Hit Points 21 (6d6 + 6)
Speed 20 ft., fly 50 ft. (hover)

STR​
DEX​
CON​
INT​
WIS​
CHA​
12 (+0)​
17 (+3)​
13 (+1)​
2 (–4)​
12 (+1)​
9 (–1)​

Saving Throws DEX +5, CON +3
Skills Perception +3
Senses blindsight 10 ft., darkvision 60 ft., passive Perception 13
Languages
Challenge 1 (200 XP) Proficiency Bonus +2

Expert Aerialist. The mystaran dragonfly has advantage on Dexterity (Acrobatics) checks when flying.

Keen Sight. The mystaran dragonfly has advantage on Wisdom (Perception) checks that rely on sight.

Actions

Multiattack. The mystaran dragonfly makes two attacks: one with its bite and one with its breath weapon. If the dragonfly uses both attacks against the same target, the target has disadvantage on its saving throw against the breath weapon.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.

Breath Weapon. The mystaran dragonfly breathes at a target within 5 feet. The target must make a DC 13 Dexterity saving throw, with disadvantage if the dragonfly used Multiattack to attack the target with its bite. The target takes 5 (1d10) cold damage on a failed save, or half as much damage on a successful one.

Bonus Actions

Darting Flight. The mystaran dragonfly can disengage or dash as a bonus action when flying. It cannot use Darting Flight if it used Dodging Flight after the start of its previous turn.

Reactions

Dodging Flight. If a creature of at least Small size attempts a melee attack against a mystaran dragonfly, or the dragonfly is targeted by a ranged weapon of similar size such as a giant-hurled boulder, the dragonfly can try to dodge out of the way as a reaction. The mystaran dragonfly makes a Dexterity saving throw with advantage (it loses this advantage when mounted or grappling an opponent). If the saving throw beats the attack roll or DC of the attack the mystaran dragonfly takes no damage and flies up to 30 feet.
 If a mystaran dragonfly is carrying or grappling a creature that is too heavy for the dragonfly to fly with, it must release the creature to use Dodging Flight. If the dragonfly is grappling a creature light enough to carry through the air, the grappled creature can make an escape check as a free action. If it fails, the dragonfly may fly away with its victim.


Description

A mystaran dragonfly closely resembles a regular dragonfly about 3 to 4 feet long. Its head has subtle draconic features as well as a huge pair of globular multifaceted eyes. Mystaran dragonflies are swift and agile flyers with chitinous exoskeletons almost as tough as dragon scales. There are six known types, in order of size and power these are white, black, green, blue, red, and gold. They possess weak breath weapons that do damage corresponding to their dragon variety: cold for a white dragonfly, fire and poison for a gold dragonfly, et cetera.
 White mystaran dragonflies inhabit subarctic areas of tundra (fields of grass, shrub and moss too cold for normal trees) and taiga (forests of pines and other conifers). Many adults only live for the Arctic's brief warm spell, laying eggs in marshy tundra pools in late summer and dying once winter returns. However, adult white dragonflies have been encountered in temperate and tropical areas. At first that suggests the whites migrate to warmer climes during the Arctic winter, but white dragonflies have also been observed nesting on sudds floating down jungle rivers, which suggests a population that lives in the tropics year round. White dragonfly nymphs can survive being frozen solid, thawing into life once spring returns.
 See the Mystaran Black Dragonfly entry for more information on these monsters.

(Monster designed by Casimir Liber and Cleon on Enworld.org's General Monster Talk Creature Catalog Forum; based on the Basic/Expert D&D dragonfly that first appeared in XL1 - Quest for the Heartstone (1984) by Michael L. Gray.)
 
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Mystaran Dragonfly Nymph
Small monstrosity, unaligned
Armor Class 14 (natural armor)
Hit Points 18 (4d6 + 4)
Speed 20 ft., swim 30 ft.

STR​
DEX​
CON​
INT​
WIS​
CHA​
12 (+1)​
15 (+2)​
13 (+1)​
2 (–4)​
12 (+1)​
5 (–3)​

Saving Throws CON +3
Skills Stealth +4
Senses blindsight 10 ft., darkvision 60 ft., passive Perception 11
Languages
Challenge 1/2 (100 XP) Proficiency Bonus +2

Ambusher. In the first round of a combat, the mystaran dragonfly nymph has advantage on attack rolls against any creature it surprised.

Actions

Multiattack. The mystaran dragonfly nymph makes two attacks: one with its bite and one with its breath weapon. If the dragonfly uses both attacks against the same target, the target has disadvantage on its saving throw against the breath weapon.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) slashing damage.

Breath Weapon. The mystaran dragonfly nymph breathes at a target within 5 feet. The target must make a DC 12 Dexterity saving throw, with disadvantage if the dragonfly used Multiattack to attack the target with its bite. The target takes 4 (1d8) acid damage on a failed save, or half as much damage on a successful one.

Bonus Actions

Jet Dash (Recharge 5–6). The mystaran dragonfly nymph swims up to 30 feet.


Description

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 See the Mystaran Black Dragonfly entry for more information on these monsters.

(Monster designed by Casimir Liber and Cleon on Enworld.org's General Monster Talk Creature Catalog Forum; based on the Basic/Expert D&D dragonfly that first appeared in XL1 - Quest for the Heartstone (1984) by Michael L. Gray.)
 
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Well it depends what we see as canon really- in Mystara/BECMI they were just Dragon Fly - so strictly speaking, iuf that is the canon then we are stuck with that as a name

alternates could be draconic odonatid?
 

Well it depends what we see as canon really- in Mystara/BECMI they were just Dragon Fly - so strictly speaking, iuf that is the canon then we are stuck with that as a name

It was "Dragonfly" (one word), splitting it into "Dragon Fly" was my doing.

The text of the monsters also has "giant dragonfly," which doesn't help much!

XL1, AC9 and DMR2 all have "There are five different colors of giant dragonfly" as the start of their third sentence. The Mystaran Monstrous Compendium has "Often called a giant dragonfly" as the start of the second sentence and "The giant dragonflies of Mystara" in Ecology.

Hey, the last offers a solution: Mystaran Dragonfly.

Alternatively, we could crib from the class of dragon they are hybrid with and call it a Chromatic Dragonfly.

Incidentally, the idea of splitting the word into "Dragon Fly" was inspired by the AD&D Sea Lion, the half-lion half-fish monster. In Third Edition the name "Sea Lion" was for the pinniped animal and the mermaid-style hybrid was renamed "Sea Cat" which seemed a bit dull to me. They could have at least called it a Sea Panther or Seapard so they sound a exciting. Sea cat sounds like a brand of budget water vehicles!

Looks up on internet…

…correction, SeaCat was a ferry service! The name came from them using catamaran ships.

I guess the Sea Lion => Sea Cat offers precedent for changing the Fly in our boys, but calling it a Dragon Insect is hardly inspiring.
 


Mystaran Gold Dragonfly
Small monstrosity, unaligned
Armor Class 21 (natural armor)
Hit Points 49 (11d6 + 11)
Speed 20 ft., fly 50 ft. (hover)

STR​
DEX​
CON​
INT​
WIS​
CHA​
16 (+3)​
19 (+4)​
13 (+1)​
2 (–4)​
12 (+1)​
12 (+1)​

Saving Throws DEX +6, CON +3
Skills Perception +3
Senses blindsight 10 ft., darkvision 60 ft., passive Perception 13
Languages
Challenge 4 (1,100 XP) Proficiency Bonus +2

Expert Aerialist. The mystaran dragonfly has advantage on Dexterity (Acrobatics) checks when flying.

Keen Sight. The mystaran dragonfly has advantage on Wisdom (Perception) checks that rely on sight.

Actions

Multiattack. The mystaran dragonfly makes two attacks: one with its bite and one with its breath weapon. If the dragonfly uses both attacks against the same target, the target has disadvantage on its saving throw against the breath weapon.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage.

Breath Weapon. The mystaran gold dragonfly uses one of the following breath weapons.
Fire Breath. The mystaran dragonfly breathes at a target within 5 feet. The target must make a DC 14 Dexterity saving throw, with disadvantage if the dragonfly used Multiattack to attack the target with its bite. The target takes 10 (3d6) fire damage on a failed save, or half as much damage on a successful one.
Poison Breath. The mystaran dragonfly breathes at a target within 5 feet. The target must make a DC 14 Constitution saving throw, with disadvantage if the dragonfly used Multiattack to attack the target with its bite. The target takes 10 (3d6) poison damage on a failed save, or half as much damage on a successful one.

Bonus Actions

Darting Flight. The mystaran dragonfly can disengage or dash as a bonus action when flying. It cannot use Darting Flight if it used Dodging Flight after the start of its previous turn.

Reactions

Dodging Flight. If a creature of at least Small size attempts a melee attack against a mystaran dragonfly, or the dragonfly is targeted by a ranged weapon of similar size such as a giant-hurled boulder, the dragonfly can try to dodge out of the way as a reaction. The mystaran dragonfly makes a Dexterity saving throw with advantage (it loses this advantage when mounted or grappling an opponent). If the saving throw beats the attack roll or DC of the attack the mystaran dragonfly takes no damage and flies up to 30 feet.
 If a mystaran dragonfly is carrying or grappling a creature that is too heavy for the dragonfly to fly with, it must release the creature to use Dodging Flight. If the dragonfly is grappling a creature light enough to carry through the air, the grappled creature can make an escape check as a free action. If it fails, the dragonfly may fly away with its victim.


Description

A mystaran dragonfly closely resembles a regular dragonfly about 3 to 4 feet long. Its head has subtle draconic features as well as a huge pair of globular multifaceted eyes. Mystaran dragonflies are swift and agile flyers with chitinous exoskeletons almost as tough as dragon scales. There are six known types, in order of size and power these are white, black, green, blue, red, and gold. They possess weak breath weapons that do damage corresponding to their dragon variety: cold for a white dragonfly, fire and poison for a gold dragonfly, et cetera.
 Gold mystaran dragonflies are the rarest of all varieties, but paradoxically have the widest range. Their favorite habitat is tropical forests and hills, but gold dragonflies can live in the habitat of any other mystaran dragonfly, from icy tundra to searing desert.
 See the Mystaran Black Dragonfly entry for more information on these monsters.

(Monster designed by Casimir Liber and Cleon on Enworld.org's General Monster Talk Creature Catalog Forum; based on the Basic/Expert D&D Dragonfly that first appeared in Dungeon Magazine #6 (July/August 1987) in the adventure "The Tortles of the Purple Sage—Part 1" by Merle and Jackie Rasmussen.)
 
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Agreed - ok, shall we aim to make them CR 2/3/4/5/6/7 for white/black/green/blue/red/gold dragonflies?

That seems too high. The BECMI dragonflies ranged from XP 35 to XP 175 which is what, from a Giant Crab, Shadow or War Horse up to a Grizzly Bear, Gargoyle or Owlbear.

None of those are Challenge 7 in Fifth Edition.

A Mystaran Dragonfly is a nasty little bugger but even a Red Dragonfly is nothing like as lethal as a CR 6 or 7 creature like a Mammoth, Mind Flayer or Young Dragon.

I'm thinking somewhere more in the CR 1/2 to 2 or CR 1 to 3 range, although that might mean we'll have several dragonflies doubling up in the same Challenge Rating.
 

Hold on a sec…

Agreed - ok, shall we aim to make them CR 2/3/4/5/6/7 for white/black/green/blue/red/gold dragonflies?

Gold Dragonflies? The Creature Catalogs and Quest for the Heartstone only have Chromatic Dragonflies, how did a Metallic sneak in?

Goes off to check…

…Oh yes, they're a New Monster in a Dungeon Magazine adventure.

Hmm, not sure whether to do those. I'm more in favour of just doing the Chromatics.

We can always add them later if we wanted to, but if we're doing the Gold I'd be thinking of doing the Brass, Bronze, Copper and Silver too while we're at it!
 

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