Saltmarsh

Abbadon warship

A warship is seen on the horizon. A booming voice -

We require your gift of submission. Bring us someone, valuable, beautiful. If we deem them sufficient, we will leave, and you will be granted peace for 3 days. Deny, and we attack. Abbadon has great appetite for humans.

It contains a spell barrier. A psychic field. At the beginning of its turn, it is disabled, and the spell mirror fires a massive spell. It can 3x spells.

At the end of its next turn, it re-enables it.

Fireball Heat metal Suffocation

THe archmage is a vulture creature (vorzon). On board the ship are dozens of slaves, caged.