Unlike dracon, this aviad is designed to be more of a scout or a semi-familiar, as it can help you deliver spells. I feel like it's been too long since I drew metal. I'm losing some of the high contrast reflectivity consistent with metal textures. Nevertheless, I really like how this one turned out, much better than the dracon.
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Coglings are a common sight aboard the Cogwork Citadel, built as tiny helpers for the inhabitants' works. Their appearances often reflect creatures on the Material Plane out of whimsy. Each aviad mirrors a different bird, each designed to complement the cogling's masters.
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Cogling Aviad
Wondrous item, uncommon (optional attunement)
In its deactivated state, this cogling is folded into a compact crest. While holding the cogling, you can use an action to activate it, unfurling into a mechanical winged creature.
The cogling uses the statistics of a blood hawk, except it is a tiny construct that can understand Common but can't speak. It also has the ability to shed dim light at will out to 20 feet. The cogling obeys your commands and is friendly to you and your allies.
The cogling remains active for up to 1 hour, after which it deactivates. You can activate the cogling once, and can't do so again until it recharges at the next dawn. If it is reduced to 0 hit points, the cogling also cannot be activated again until it is repaired using tinker's tools and materials worth 5 gp.
Optional Attunement. If you attune to this cogling, it can also deliver spells for you while it is active. If you cast a spell with a range of touch while the cogling is within 60 feet of you, it can use its reaction to deliver it as if it had cast the spell. It uses your modifiers for the casting.