Healing

Stat which healing is based off of:
 * Clerics, deathknights, and paladins: Piety
 * Druid: Higher number between intelligence and constitution
 * Vampire, ranger, mage, and bard: Higher number between intelligence and piety
 * All other classes: Constitution

-- Improve based on level --

 * 1) Ceris Cleric
 * 2) Enoch and Aramon Clerics
 * 3) Gradius and Kamira Clerics
 * 4) Enoch and Gradius Paladins
 * 5) Ares Cleric and Deathknight
 * 6) Druid

-- No improvement based on level --

 * 1) Monk, ranger, bard, vampire
 * 2) Mage, thief, assassin, rogue, fighter, werewolf
 * 3) Berserker (can only heal off scrolls, which gives penalty)
 * 4) Lich (can't heal)