Fuzan

Fuzan is the dragon of the Umbral Sands and the end of Icthlarin's Little Helper, fought in a fight-cave arena with no shade and a heat meter that keeps climbing. Power level 6 gear gets you through the first time, adamant and red dragonhide or infinity robes make it comfortable. He is immune to poison, bleed and burning, resists fire and is weak to water, so the plan is a crush or ranged weapon, water runes if you cast, and nothing that relies on a status effect. Put a lodestone at the cave entrance before you start.

Two things set this fight apart from the earlier dragons. First, the heat: use the cooling versions of your infusions, drink Strong Tea for stamina, and keep an eye on the meter between his attacks, because the sun does damage on its own. Second, the fire: a Super Antifire Potion and the Dragoncurse Shield together make his dragonfire survivable, and without them the marked-player breath in the later phases is the run ender. Food is Stuffed Catfish and Eggs Royale. The Amulet of Glory is the trinket, with 25% critical damage for every style and five extra defence. The Obsidian Cape and Fire Cape are the two capes that aren't interchangeable here.

His own attacks are a backhand claw sweep at close range, stomps that send lava spikes along the ground, a two-handed slam that pools lava around his feet, a breath that crosses the whole arena and a fire rain of four fireballs. Between them the fight runs through eight phases that reshape the floor. He breathes on the ground and flies off; the arena changes, sections of floor go hot and KotHaar thralls come in; killing them brings him down in the centre with a burst of flame, so move out before he lands and dodge the four stomps that follow. Later the hot floor rotates, and the middle is the safe spot until he readies to drop. From the fifth phase he charges through a passage, pins himself to a wall and marks one player for a tracking breath that you dodge several times in a row. The last phases shrink the safe floor to a few rotating sections with thralls on top of them, so slow, deliberate dodges beat fast ones.

The Adamant Mace with the shield is the steady melee pick, the Adamant Crossbow the ranged one, and the Master's Staff for magic. On a second run the Bow of Elidinis and the Pharaoh's Sceptre (its special summons a friendly kalphite) make the thrall phases far easier.