[quote=@Flamelord]
<Snipped quote by PaulHaynek>

Aren't those two (Plus Saver, etc) supposed to be replacements for the seven default classes? I mean, Avenger was a replacement for Berserker
[/quote]

Correct. Avenger was summoned but killed b/c they thought he was such a weak class. When he died he did what other servants do when they die and was poured into the grail, which corrupted it b/c Avenger was not a "Heroic" Spirit. I mean it is, but not in the way that the grail was intended to handle. Bottom line, seven spirits is still the limit. :( But hey, come up with another class or we can use Avenger as a plot device.