Pure INT.
I am mostly playing with a Cryomancer. She is the main damage dealer, my role is to support and deal damage whenever possible. Sadhu in OoB is incredibly fast and can move to his body in an instant. I can heal at multiple places while using ABE whenever things get difficult. I can also fade or safety zone to provide some time for casting spells such as snow rolling or snow pillar. Dungeons are a lot of fun too and I rarely die. When my heal is on cool down I can still help with mobs by utilizing my sadhu skills. Right now I am starting to experiment with Vashita Siddhi.
Oh, somethin else u can do with Sadhu: Cast OoB, sit down with your body and place a bonfire. You can AA with OoB while recovering