I'm actively maintaining a comprehensive article to help explain to new cube players how some complex vintage level cards work in a cube environment. Vintage Cube Cards Explained
As someone who still runs and highly values Night's Whisper - I respect this card even if I don't think it will break into my 450 unpowered list. Not terrible knowledgeable about the peasant cube format, but I imagine this is a shoe-in there. Also, that art breaks my horse-loving heart so I'm glad it isn't good enough.
Fell Stinger
Nice deathtouch creature with Aristocrat and Zombie synergies.
[180 classic cube]
Vintage Cube Cards Explained
Here are some other articles I've written about fine tuning your cube:
1. Minimum Archetype Support
2. Improving Green Archetypes
3. Improving White Archetypes
4. Matchup Analysis
5. Cube Combos (Work in Progress)
Draft my Cube - https://cubecobra.com/cube/overview/d8i