Read from 'Summoning and Control'.

You pick up 'Summoning and Control', a thin book bound in red and gold trim, and flip to a random page.

"...contrary to popular belief, any person, mage or non-mage, may summon and bind a creature from other realms. The process requires only that the summoner have a clear conception of the being to be summoned and have prepared a suitable location for the summoning, using the materials and incantations previously described. It is important that the summoner should not enter the summoning field. The summoner should bind the being to their will by speaking the being's name while holding their palm outstretched facing the summoned being..."

After a little more reading, you think you might be able to summon Kyris and possibly bind him. That should free you from his stupid Trials and get you back home!