The profit rate assumes 20 kills per hour. Your actual profit may be higher or lower depending on your speed.
Zulrah is a high level boss that require relatively high combat stats and equipment to kill. Zulrah is commonly killed for its profitability due to its consistent drops averaging about 163,651 per kill. At higher levels, it is easily possible to get upwards of 24 kills per hour, at an average of 2 minutes per kill and approximately 30 seconds of banking, which in turn, increases gp per hour to about 3,927,644 (not including cost of supplies).
Typical gear includes the use of Void Knight equipment especially when ranging. Ahrim's robes prove to be better than void mage due to Ahrim's higher magic accuracy. However, void mage will suffice and are recommended to those who wish to switch less between gear during the fight.
When Zulrah is green, it attacks with Ranged, spreads toxic fumes over the area, and spawns snakelings who appear in the arena via white orbs. They have 1 hitpoint but can deal heavy and accurate damage. Pray .
When Zulrah is turquoise, it attacks with Magic and Ranged, spreads toxic fumes, and spawns snakelings. Pray .
When Zulrah is crimson, it attacks at the player's recent spot. If they are caught by the Melee attack, they will also be stunned. Prayer is not required when Zulrah is in his crimson form.
Towards the end of each attack pattern, Zulrah alternates between Magic and Ranged attacks (colloquially known as the Jad phase). Alternate between and prayers.
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