Confrontation

Now convinced something was up, the party headed for the Headmaster's house, with the exception of Rudy, who stayed behind to heal himself.

Arriving at the house, the party found a creature they had never seen before, with 2 hands on the headmaster's head, as if stealing something from him. Seeing the party, the creature went into action. And what actions it could perform.

Some of the abilities it had, most as minor actions, so it could perform 2-3 in a turn. Add to that, it could teleport 6 and it was a formidable entity.

Esoteric Touch, damage and ongoing
Esoteric Bolt, damage, blinds target, and hits adjacent creatures
Banishing Sign, target disappears from combat for a turn
Repulsing touch, damage and target is pushed
Extract Arcane Soul, damage, dazed, and the creature heals
Flametrap Invocation, damage, immobilized, and damaging aura
Sharing of minds, damage, dazed, and target attacks nearest ally
Arctic Rune, burst damage, and slide

With Rudy still off licking his wounds, combat wasn't going well. The creature kept teleporting from one balcony to another, so it was very difficult for the melee combatants to hit. Add to that, it's myriad of abilities and it was spreading the hurt around.

After taking the time to heal, Rudy arrived and with that, the battle tipped in favor of the party. With 2 combatants on each balcony, the Spell Weaver Collector had few places to hide and finally fell to the massive onslaught of the party.