access to servants at piety 75 (enough for power 3, "Animate Dead", but you don't get access to all servant types until piety 120 (enough for power 5, "Enslave Soul"). This should fix the balance issues with, say, getting a death cob as your first servant early in the game.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7272 c06c8d41-db1a-0410-9941-cceddc491573