A fire orb is made by casting a Charge Fire Orb on an unpowered orb (requires level 63 Magic, 30 fire runes, 3 cosmic runes, and an unpowered orb). It must be cast at the Obelisk of Fire, located in the Taverley Dungeon, west of the black dragons.
With 80 Agility, one can quickly access the obelisk by using the "strange floor" jump near the entrance to the dungeon. With 70 Agility, you can use the pipe to squeeze through to the blue dragons, which provides a reasonably quick route to the obelisk. Without 70 Agility, you must walk the entire length of the dungeon, which takes several minutes, and you will also need a dusty key.
Monster Combat level Quantity Rarity Zombie (Tarn's Lair) 61–80 1 Uncommon Killerwatt 88 2 Uncommon Lava dragon 252 15 (noted) Uncommon Cerberus 318 20 (noted) Common
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