Which spells do folks consider worth learning or upgrading ?

[Elwin]

Magic spring,ress,mass dragon slayer,mass magic schackles,trap,pain mirror,teleport,target,phantom,hypnosis,doom probably blind would be great but i have never found it o.O
gift is a nice spell but mostly for inqi so lvl 1 is enough , dragon arrows can be at lvl2 if you dont have 15+ int,sacrifice 2 is mostly enough, sheep is quite expensive spell .. those are good for every classes. For mage also some direct damages like fire rain,armageddon, also demon portal is nice