The heal portion would be useful to cut down on the down-time by healing after a mob, for those who don't like spamming meats or have enough power to one-shot them.. Kind of like the card for Slaughter armor, it has infinite usefulness for melee classes at low levels that mob.. I.E. Low-leveled blacksmiths, knights. Heck, I niffed with my assassin using one, getting 100HP back per kill, and managing to break even with the times flee didn't work.. Of course, once it gets to transcendent classes, the heal is kind of petty unless they have uber-high defence and big mobs to eliminate the need for HP consumables or down-time for healing.