Idk if its been asked but I need a quick reply
Can I play lands from exile with it {Nughtveil Specter}
Yes, there is nothing in the text that specifies otherwise.
If the text reads "play," yes; if it reads "cast," no.
Compare {Nightveil Specter} and {Chandra, Pyromaster} vs. {Daxos of Meletis} and {Psychic Intrusion}. The former let you play lands; the latter do not.
Also, you can only the land if you haven't played one already since it does count towards your land per turn amount