The Segnale is the only real healer in the game and it isn't a true healer at that. The Segnale is billed as an assasin and healer class. At low levels the Segnale class is a slow go...it doesn't heal very well and doesn't do much damage. At high levels the Segnale is one of the most sought after classes in the game as it is one of the best PVP classes and with significantly improved heals the Segnale is a must have for high level instances and PVE parties. Here's a link to the Segnale skills and abilities:

http://2moons.mmosite.com/guide/class/segnale.shtml