the only usefull might abilities a mage needs is
frenzy(due to mage mostly not having enough attack, and when troops kill a troop since u lower their numbers with spells the +2 +4 +6 attack is very handy!)
rage control if u like to use rage more often and more frequent use of timeback
night operation(during night u get attack+def bonusses which are also very handy for mages)
don't bother with onslaught or tactics
female+anga ruby will let u always start first!
and that is waaaaaaaay cheaper than 10 mind runes on tactics and 5 on onslaught
rest is pretty much obsolete there
unless u like to use bowmen
then u could use that
or like the knight circle+teleport combo u should get that too
^^