Best 5e match for the Huecuva?

[DwarfFighter]

I used these in earlier versions, but they appear to be absent in 5e. Any suggestion for a substitute? Looking for something Undead at CR3, a single support monster, needs to look alive until revealed.

-DF

[Moredhel24]

never heard of these before but after quick google search here's a few i found
https://www.dmsguild.com/product/271438/Huecuva-Fallen-Priests-Turned-Undead
https://sefotron.blogspot.com/2014/11/ancient-huecuva-cr-2-undead-5e.html
http://swordsofathanor.blogspot.com/2014/11/5th-edition-monster-conversion-huecuva.html