First, gear up with any fire‑resistant items and keep a steady supply of health potions. Lure the dragon into the tower’s spires so it has to climb—this exposes it to your spells. When it breathes, cast a counter‑fire spell, then finish it off with a long‑range attack. Timing is everything; wait for that pause in its attack before you strike. Remember, a patient strategy beats brute force any day.