These are both probably horribly unbalanced, but I thought they were fun ideas and I never make cards. Holy Spirit is relatively straightforward: Searching for Son of God has been one of those things that's been suspicious, but I think that with the dominant cap, this is fairly balanced. The restriction is put in place to give the opponent a chance to play something (primarily VP or Mayhem, though something like Sorrow of Mary would work) to eliminate the benefit of the search.
Number of the Beast is built simply as a one-time block against superior numbers. If anything it's
underpowered, but getting high numbers can still be beneficial.
