Why AST Using MP Refresh Below 33% and Still Going OOM Not a Surprise?

[Volsung]

Don't forget Freecure, Overcure, Divine Seal, and Asylum for more mana reduced healing, plus Presence of Mind for a spell speed CD.

When all's said and done, WHM beats AST in mana conservation by a significant amount.

Does medica also still have the 20% chance no mp cos also?