Serpent Fly and Dragon Fly

Fortress creatures
Level 1
Gnoll
Gnoll Marauder
Level 2
Lizardman
Lizard Warrior
Level 3
Serpent Fly
Dragon Fly
Level 4
Basilisk
Greater Basilisk
Level 5
Gorgon
Mighty Gorgon
Level 6
Wyvern
Wyvern Monarch
Level 7
Hydra
Chaos Hydra
Towns

Statistics
Serpent Fly
Cost per troop  220
	Attack 7 Defense 9 Damage 2–5 Health 20 Speed 9 Movement Flying Size 1 Growth 8 AI Value 268
Special abilities:
• Dispels benefical spells
Dragon Fly
Cost per troop  240
	Attack 8 Defense 10 Damage 2–5 Health 20 Speed 13 Movement Flying Size 1 Growth 8 AI Value 312
Special abilities:
• Dispels benefical spells • Inflicts weakness (advanced)
Portraits

Serpent and Dragon Flies are the level 3 creatures of Fortress. They are recruited from the Serpent Fly Hive.

"These giant, flying insects attack by striking with their tail stingers. Their attacks dispel any beneficial spells affecting their target. In addition, the Dragon Flies have the ability to cast Weakness on their opponent every time they attack." ^{SoD manual}

Both flies apply their dispelling ability every time they attack. No creatures are immune to it and it can not be resisted in any way.

Heroes with a specialty

• Korbac the Beastmaster has serpent flies as a specialty, which increases the attack and defense skills of any serpent or dragon flies for each level attained after 3rd level and gives them a speed bonus of 1.

Restoration of Erathia and Armageddon's Blade

In Restoration of Erathia and Armageddon's Blade the statistics of serpent and dragon flies were a bit different. They were changed in Shadow of Death. Their attack and defense were increased and the dragon flies were given the ability to inflict weakness on their targets when they attack. The same changes were applied in the Restoration of Erathia patch 1.3 and Armageddon's Blade patch 2.1.

Statistics
Serpent Fly
Cost per troop  220
	Attack 6 Defense 8 Damage 2–5 Health 20 Speed 9 Movement Flying Size 1 Growth 8 AI Value
Special abilities:
• Dispels benefical spells
Dragon Fly
Cost per troop  240
	Attack 6 Defense 8 Damage 2–5 Health 20 Speed 13 Movement Flying Size 1 Growth 8 AI Value
Special abilities:
• Dispels benefical spells
Portraits

Level	6	8	6	8
3	+1	+1	+1	+1
9	+1	+2	+1	+2
12	+2	+2	+2	+2
18	+2	+3	+2	+3
21	+3	+3	+3	+3
24	+3	+4	+3	+4
33	+4	+5	+4	+5
39	+4	+6	+4	+6
42	+5	+6	+5	+6
48	+5	+7	+5	+7
51	+6	+7	+6	+7
54	+6	+8	+6	+8
63	+7	+9	+7	+9
69	+7	+10	+7	+10
72	+8	+10	+8	+10
75/88	+9	+12	+9	+12

HotA changes

In Horn of the Abyss, Fortress heroes spawn with a minimum of three Serpent Flies in the stack instead of two (2-4 to 3-4).

Official Renders

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User commentary

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Upgrade Serpent Flies to Dragon Flies as soon as possible. As third-level creatures both Serpent and Dragon Flies are easy to acquire, and with great speed of 9 or 13 they make excellent creatures for rushing through the map, thus being useful for a supportive/secondary hero. Hero with only Serpent or Dragon Flies in the army will move rapidly to scout areas, and with high spell points and power skill can even get through wandering creatures. Due to their Dispel ability, Serpent and Dragon Flies will be very useful when attacking enemy units buffed with spells such as Bless, Bloodlust, or Haste, which will no longer affect them after the flies strike. Defend these units as they are somewhat fragile, as opposed to Basilisks and Gorgons. There can be even an army made only of Dragon Flies, with dozens in each slot.

See also:

• Dragon Fly Hive
• List of creatures

• Comparison of Level 3 Creatures