Short and sweet, a 3x Hit with both a Charm and Lifesteal attached to it. Nana's active is insanely powerful in both ares areas of play, as the lifesteal obviously scales with the damage you do, and the charm is a fairly decent chance in colosseum if you fail to murder. The Lifesteals scaling works with all enhances, so you will typically see someone heal to full off of an AOE Nana in colosseum, and is also effected by Senjuu and Kisshoutens subskills in PVE.