Soul Feast as a ward generation tool

What do you guys think about soul feast as a ward generation tool in both bosses and clearing situations?

I’ve been running it with bones of the accursed and wrest and it seems good in fights against groups, but I’m not sure about bosses, I’ve not had a lot of good fights with bosses to play with it yet.

Is it even necessary with a full set of gear with decent ward stats?

What do you guys think?