Let me disagree.
Teleport in the swamp is given quite often, especially on the third level, but building a third level in the swamp... It's better to do it in the second level if there is one... Although there are Sanctuaries and Necropolises...
I wouldn't specifically take Wisdom, unless on the 5th level you've mastered 2 starting skills, and on the 6th level they offer something bad, then you have to agree to Wisdom....
To teleport Hydras behind a wall, you need to increase Water magic, if you're lucky on the 4th level, then it's quite acceptable...
I don't think anyone will take Wisdom on the 6th level if they already got Earth and Logistics...
:confused: