SUMMON
SpellUsage : cast 'summon' <victim>
Usage : cast ‘summon’
Will summon a person of the name spoken. It is not possible to summon Someone of three or more levels above yourself. If you attempt to summon a monster, it will get a saving throw, and won’t appreciate the summon if it succeeds.
The summon spell requires that a GLYPH OF SUMMONING be present in the Room for it to succeed.
You can’t summon a monster to a peaceful room, and you can’t summon
On a failed summon attempt,
See also: NOSUMMON
Full documentation: Docs Game Mechanics