A quick test in T1, in Red, with only a few skills used, showing that it is as easy as School/Lib =>
Any Guardian/Warden/Champ/... can do the same thing, I just replaced some stats (like Tact. Mit, useless here) by several Morale essences.
(tested in D3D9 because in D3D10 (32-bits/4Gb RAM), it crashes nearly immediately)