The Aviary’s F-21 model of wingblade are ancient ancestors compared to the modern F-32, but no less dangerous. The blade’s greater mass contributes to greater cutting force at the expense of flight mobility.
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F-21 “Kestrel” Wingblade
Weapon (turbo-sword), technomancy, uncommon (requires attunement)
Twin Modes. This weapon has two forms — a Blade Form and a Wing Form — that determines the weapon’s properties, described below. At the start of your turns, you can decide which form the weapon takes (no action required).
Blade Form. While in this mode, the weapon’s damage die is 2d6. When you hit a target with this weapon, you can use a bonus action to deal an extra 1d10 weapon damage with the attack.
Wing Form. While in this mode, the weapon’s damage die is 1d10. While holding this weapon, you can use a bonus action to fly up to 15 feet. If you don’t end this movement on a solid surface, you fall.
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DESIGN COMMENTARY
This was designed as the precursor to the F-32 “Falcon" Wingblade, using some of the more simplified aspects of the properties. Unlike the Falcon, the offense form can perform a bonus action d10 damage (average 5.5), which will come up more often at the uncommon tier because there are fewer uses of bonus actions at that level (though Rage and Second Wind still exist).
The wing form grants extra movement in the form of flight, but can't be Dash-extended to double the distance. In exchange, the damage die is reduced by an average of 1.5 (from a typical greatsword's 7).