Pure Spy- Advantages - No need in allies DTW to attacks (if 0 gold out) ??? Disadvantages - Open for attacks if any gold out No troops ???
That's pretty much it Minas. Except for advantage being osf capability, but I rarely see that nowadays.
Only good if you want to sit with no cash out and fight attack builds. Also if you want to be helpful. Hansels are much more worth it, and you have the ability to drop a building to become purespy/osf
The advantages of being a pure spy is that you can pin up to 2 people at the same time, troop or no troop build. Pure spies are for endless wars and 1v1s. Nothing to lose, nothing to spend. Your pick.
You're pinned for attacks if no gold out. The only thing your enemy can do is scout the crap outta you. Once he/she gets bored of scouting you (which he/she will certainly do) then you continue burning their pots. With a decent bank on the side you wait for the best moment to strip, most likely when sleeping, and you strip farm the crap outta your enemy.
I've seen a bunch of people with pure spy builds that only grind EB. This is dumb because it is ONLY useful in war. Unless you're going to war, don't bother with pure spy.