Tyzias and Dust spring into action the moment the Drake reveals itself. The troll uses the mass of swirling lights she created to illuminate the house to bamboozle and distract it while Dust hacked away at the drake with his swordplay. Then she pitched a dualcast fireball at him to enhance into a roaring pillar of flame, and after a moment of debate decided to tip her true hand and joined the fray with Caledfwlch (created to bypass perfect immortality clauses and sourced from the essence of a being capable of obliterating ghosts wholesale) and Dragon's Spine (crafted from the Calamity Dragon and especially adept at slaying its draconic kin).

Here's the thread.