[st.patrik]

Depends on whether you're going for an all-out bless strategy (i.e. lvl9+).

Personally that's not my strategy. Instead my focus was on getting good scales, and then adding on what I could.

With that said, I think Nature, Fire and Air are all good for the Wardens. Nature to prevent afflictions and because you have a Nature gem income, but no national nature mages to use it, Fire because Wardens do a lot of damage (11+9=20) so an attack bonus to help them hit more often is good, Air because they are vulnerable to missiles.

If you can get up to a 9, then nature is even better (berserk), and water may become a viable possibility (mainly for the quickness). Death I haven't experimented with. Earth might be good, for the protection bonus and reinvigoration (enc. is 6, which is somewhat high). But I haven't gone there.