Why does it take a full mana bar to kill something?

[Vinven]

Arg, nevermind.

[Arianrhod]

DDO is based on D&D....at 1st level in D&D, casters get very few spells; they expect to rely on non-magical means to kill stuff for the most part (or spend a whole lot of time resting to get spells back). At higher levels it gets better, but for the first few levels, it's best to plan on being able to use a crossbow, or wands, or other party members to kill stuff. Charms can work, if they last long enough. Summoned creatures too, or hypnotizing things and hitting them with something that does a lot of damage on a crit.