The Spirit

"'Everyone worked on classic potions. But I worked on something greater.'"The Spirit is one of the classes in Emerald Chambers. Its (Spirits are genderless) almost free healing, fast life drain, guaranteed attack and identify options make it a very versatile class.

On the other hand, few options are still viable when used too often. Abilities, especially Soul Drain and the Flask, must be used carefully, or will end in disaster.

Backstory

Atlantis. The Royal Guard, Excaliron, had with the power of the Outbreak his creation finished, which would freeze Atlantis first, and soon the entire world. But the Spirit had created a Teleportation Scroll, and managed to get away and survive.

Abilities Strategy

The Spirit is, as the class name already tells you, very versatile. The Flask can provide nearly endless Health and Magic, especially in the endgame, unless it is used carelessy. The Alchemist Spell can identify anything, giving a large bonus (as no scroll or potions needs to be read or quaffed without knowing the effect) but limiting Food and Magic quickly. On top of this, the Unstable passive allows for free grave robbing giving bonus resources, and becoming Shadowed has no penalty anymore.

Without a doubt, the best ability is Soul Drain. It can give you large amounts of health back very quickly, while easily finishing off even the strongest enemies. As it gets relatively stronger per floor, the Spirit hugely benefits from magic-boosting abilities like Scroll of Charge, the Orb of Absorbance or Potions of Magic (which can be identified before using!). There are two problems with it: it requires full Magic to activate, making it harder to utilize later on, and you have to be fleeing all the time to benefit from the health bonus. It also cannot be used on Bosses.

Watch out with all its abilities, though! Using the Drain Flask too often leaves you with too little health, Spirit's Ether can not be used in combination with other Magic-required items, and the Alchemist Spell can (especially early-game) suck up your resources quite fast. Moderate magic use, use the Flask only in life-threatening situations, and remind yourself that overconfidence is a slow and insidious killer. The Spirit is ridiculously easy to win with as long as you know what you're doing.