Fossil Haunter
I love this Card! It is so cool (even though it only has 50 HP ^_^) Well I will state the Bad Sides First.
-Only Has 50 HP
-When he evolves from (F) Gastly he doesn't gain HP
-His Attack Only does 10

I think Haunter is one of the best stallers out there along with Chansey and Igglybuff. If you have a Stall deck, definately put him in there. The best part of him is definately his Pokemon Power, basicly having a Baby Power. Add in his attacks Auot-Sleep and you have a stalling Monster! If Hitmonchan ever comes back into style (since we keep seeing more and more colorless Pokemon into the environment) then use Haunter. No retreat cost makes him very versital.

Overall I givHaunter a 7.6 out of 10!