Being stunned when an enemy hits you causes you to take 30% additional damage. The idea here is to get out of the stun effect of Terran faster than he can attack if you're under the effect of his slow (+33% attack interval inflicted by Grasping Roots). Weapons with a 2.9 second attack interval will get away in time, however weapons with a 3.0 second interval will not without the use of interval reduction bonuses; specifically, 3.0 second interval weapon need to be reduced to 2.9 seconds or faster. Therefore, it is only safe to use Cloudburst Staff while using Surge I or Surge II before clearing Into the Mist.
The safest spell to use while maintaining a decent adjusted clear time is likely the 20k-accuracy Gust, with a wand and a shield equipped.
Worth noting that using Cloudburst Staff, even with Surge I or Surge II, will likely far outpace any other spell/weapon combo. However, be aware that this will cost a lot of runes, and running out of them will put you in danger of dying. Check combat sim to see how many runes you will spend per hour, and make plenty of extras to survive for as long as necessary.
The following methods will reduce your interval sufficiently enough to avoid the need to spend Air Runes on Surge Auroras, making this particular method effectively foolproof. You can use the Fury II Aurora instead for better adjusted clear times if you meet one or more of these requirements.
It may be helpful to check if you can idle the dungeon with the Combat Simulator. Can I Idle may be misleading in the amount of DR you need. 'If' your attack interval is 2.9 or lower with a staff, or if you are using a wand, you can uncheck the Status Damage checkbox as you will not be taking stun damage from any of these enemies.
The rest of this guide is NOT for your first clear, your average clear, or even your first 100 clears. This is purely to maximize scrolls for any missing items. This will assume 99 in all skills, access to nearly all weapons and items in the game, and access to all DR and HP pets. This assumes you are (unless otherwise noted) using an optimal Agility setup, are using your best dps prayers, your best summoning synergy, and are using Diamond Luck Potions
To use this method, you need to have an attack interval of 2.9 or lower. This is achieved the easiest in the end game with Otto, or alternatively with Surge I or Surge II.
This achieves around 26 to 27 scrolls per hour, depending slightly on your Astrology bonuses.
Much like any other dungeon up to now, Manual Eating will be required.
Melee
Gear
A Melee setup for Earth God Dungeon will take around 30 minutes to clear and take roughly 1,150 Lobster. Rune Equipment lowers the Lobster amount by roughly 150 per clear. It has little to no impact on clear speed.
Even though this is technically possible, it will require a whole lot of farming.
To be able to do it with Ranged you will need Level 70 as well as farm enough Food Box I from lower dungeons to obtain enough Swordfish for Raft Building.
It will also require Rune Equipment.
This dungeon will take roughly 35 minutes to clear with Melee and use approximately 1030 Lobster per clear.
This will require the Level 55 Skill cap to be unlocked. You can use higher or lower tiers of Wizard Armour.
It won't really have a large impact on the kill speed (roughly 20-24 minutes), it will however impact how much you need to eat.
The increase from Earth Acolyte Wizard Gear to Earth Adept Wizard Gear is is roughly 750 Lobster to 1,200 Lobster for example.