Evasive Flyer: A giant tabanid gains advantage on Dexterity saving throws when flying and attackers have disadvantage on attack rolls against it.
If the giant tabanid is mounted, it must make a DC 12 STR check to use evasive flight each time it is attacked.
Keen Vision. The giant tabanid has advantage on Wisdom (Perception) checks that rely on sight.
Blood Drain. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 6 (1d6 + 3) piercing damage, and the giant tabanid attaches to the target. While attached, it doesn't attack. Instead, at the start of each of the giant tabanid's turns, the target loses 6 (1d6 + 3) hit points due to blood loss.
The giant tabanid can detach itself by spending 5 feet of its movement. It does so after it drains 10 hit points of blood from the target or the target dies. A creature, including the target, can use its action to detach the stirge.
Vomit. Ranged Weapon Attack. +5 to hit, range 10 ft., one creature. Hit: 4 (1d6 + 1) acid damage.
Dodging Flight: If a creature of at least Small size attempts a melee attack against a giant tabanid or the fly is targeted by ranged weapon of similar size such as a giant-hurled boulder, the giant tabanid can dodge out of the way as a reaction. The giant tabanid makes a Dexterity saving throw with advantage, and if it beats the attack roll or DC of the attack the giant tabanid takes no damage and flies up to 30 feet.
Description
The giant tabanid (colloquially known as the giant horsefly) is a flying insect about the size of a pony that has been domesticated and used by the duergar as a mount. Its origins are unknown - whether it was somehow bred or created by some permanent size-altering magic.
It is a stocky well-built fly, generally dark grey or black with large multifaceted green eyes. They are surprisingly agile and adept flyers, despite their size. Like their tiny ancestors, they live in marshes and swamps, both above ground and underground.
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