Ad aspera

I had an idea for a character. An Ardorian paladin-scholar, wandering the world and preaching the word of the All-Mighty to all sorts of people, hoping to lead them onto the path of righteousness, onto the path of redemption...

Is it possible to cast a spell and move in one turn?

Can a mage prematurely interrupt the effect of a spell if he suddenly wants to move from his position? Or does he have to either cast a fire shield on himself or stay in place, muttering "This is fine"? If an opponent starts his turn in a wall of fire, does he take damage when moving to other cells of the wall? Does the opponent take damage for moving through each such fire cell, or is the damage dealt only once, regardless of the number of cells passed? If a character is pushed into a wall, does he take damage?

How permanent are the Warlock's transformations? If the transformations are permanent, can a character change his age through transformations and, in essence, not know old age? Can transformation be used to cure chronic (and not only) diseases or injuries? Can transformation be used to heal injuries and restore lost limbs? Can transformation be used to restore one lost limb at the cost of another?