Whats the best exotic engram farm?

[wintry niche]

I need the Ophidia Spathe exotic, and I don't know where to get exotic engrams

[simple ore]

Exotic engrams drop very often from high difficulty nightfalls, the higher the better. Xur can give you up to two per week too if he's not selling Ophidia

[wintry niche]

Alright, thanks

[wet cedar]

there is also a public event on neomuna that only takes place in the vex incursion zone. you have to kill 6 big minotaurs and get a guaranteed exotic