CAST
Syntax: cast <spell> <target>
Casting spells costs mana.
The <target> is optional. Many spells which need targets will use an
appropriate default target, especially during combat.
If the spell name is more than one word, then you must quote the spell
name.
Example: cast 'cure critic' frag. Quoting is optional for single-word
spells.
You can abbreviate the spell name.
When you cast an offensive spell, the victim usually gets a saving
throw. The effect of the spell is reduced or eliminated if the victim
makes the saving throw successfully.
See also the help sections for individual spells.