They'll speak with him for a while longer, explaining the spell they used, and making the arrangements. Curiously, Draiss will notice the spell they're using should be working the way they intended; the spell is, effectively, an empowered version of Gate, designed to pull more, and more powerful outsiders. It should choose a random location in the plane, to draw an appropriate outsider from, and studying the weaves they used, it's clear they attempted to draw from different areas... but something was redirecting it.