"Azantyssy kostōbe dovaogēdi urnesi."

Translation: The knights see the mighty Unsullied.

[TheEnzoOrellana]

Shouldn't "dovaogēdi" be on it's accusative form?
Shouln't it be "dovaogēdī"?

[JenFeder1]

This sentence is talking about a single Unsullied, so it uses the singular accusative, which for the 2nd declension class ends in -i. For nouns that end in -y, this is the same as the plural nominative.

See more at this link:
https://wiki.dothraki.org/High_Valyrian_Noun_Declensions#Lunar-type:_tr.C4.93sy