Corrosive powers is a new player power system, released in WoW Midnight Patch 12.1, that only works in World Content, Delves and Prey. These are very powerful effects dealing large amounts of damage to enemies or giving you huge stat buffs.
In this guide we go over how to unlock Corrosive Powers in WoW Midnight Season 2 and which of the Corrosive Powers are the best to use.
How to Unlock Corrosive Codex Powers in WoW Midnight
Corrosive Powers first need to be unlocked, this is through a short questline that can be found in the Vaults of Atal’Utek. This quest rewards 8 Corrosive Souls, which can be used on the Altar of Corrosion, found in the Vaults of Atal’Utek, to access the Corrosive Codex.
The Corrosive Codex will show you all the powers available, each one will cost 8 Corrosive Souls to unlock. Initially you can only have one power active at a time, and once you have unlocked 8 powers, you can have 2 powers active at the same time.
Best Corrosive Codex Powers in WoW Midnight Season 2
All of the Corrosive Powers can be easily swapped by returning to the Vault of Atal’utek and interacting with the Corrosive Altar, where you will be able to select a different power you have unlocked. Clicking on the currently active power will deactivate it and allow you to pick a new one.
Note: The Corrosive Altar can also be found at the start of Delves.
The best corrosive powers are going to be similar for most classes. Our recommended order for the best Corrosive Codex Powers:
You can change between the powers that you have unlocked, but the amount of Corrosive Souls you can get per week is limited, therefore we would recommend unlocking Ulatek’s Gift first; although it can take a little while to ramp up, it does a large amount of damage and doesn’t require any other power to be good.
Once you can have multiple Corrosive Codex Powers active at once, we would recommend using the Ouroboric Cycle and either the Accursed Poison or Plague of Corrosion Power, as these will poison targets; which can activate secondary effects on the Ouroboric Cycle, or other Corrosive Codex Powers if you choose to use a different one.
There is a case to use Gorgoneion Gaze, which when you drop below 50% health turns enemies around you into stone, making them inactive for 10 seconds and slows them when they break out; this can quite easily save you while you are in Delves, doing Prey and Vaults of Atal’Utek.
List of All Corrosive Codex Powers
While we have suggested our recommended Corrosive Codex Powers, there are many more to choose from, and you may decide the corrosive powers we suggest to be the best don't quite fit what you prefer.
The table below shows a full list of the Corrosive Codex Powers, what each of them do and how powerful we think they are rated S-Tier through D-Tier.
| Corrosive Codex Power | Tier Rating | Corrosive Codex Power Effect |
| Ophidian Maw | S | Damaging an enemy has a chance to call a giant snake that erupts from below, gnashing at the target's location and dealing Nature damage split between nearby enemies. Any Poisoned non-boss creature damaged below 20% health is executed. |
| Ouroboric Cycle | S | Chance during combat to begin an Ouroboric Cycle, increasing all Tertiaries for 5 sec, then all Secondaries for 5 sec, then your Primary Stat for 5 sec. In this state, slaying an enemy causes 1 additional Cycle to occur after the last.While you are Poisoned, each Cycle's duration is extended by 1 sec. |
| Ula'tek's Gift | S | Your harmful spells and abilities have a chance to afflict your target with 5 stacks of Ula'Tek's Gift, dealing Nature damage per application every 5 sec for 1 min. While you are Poisoned, apply 5 additional stacks. Upon applying 20 stacks to a target, the Gift Corrodes, dealing the remainder of its damage immediately before removing itself. |
| Viperine Grasp | A | Your harmful spells and abilities have a chance to pull up to 2 nearby enemies to your current target's location, dealing Nature damage to affected targets. Up to 3 nearby Poisoned enemies are also pulled in. |
| Gorgoneion Gaze | A | Upon dropping below 50% health, petrify all enemies within 10 yards for 10 sec. Petrified targets are stunned and invulnerable. When they break free, enemies are Poisoned, taking Nature damage every 1 sec and slowed by 50% for 5 sec. |
| Insidious Venom | A | Chance during combat to Poison yourself, lowering all of your Secondary and Tertiary Statistics while greatly increasing your Primary Stat for 12 sec. |
| Plague of Corrosion | A | Chance during combat to apply a stacking Poison to all nearby enemies, dealing Nature damage every 2 sec for 1 min. On death, the Poison and its remaining duration are transferred to a new target. |
| Miasma Geyser | A | Chance during combat to stir up a Miasma Geyser under a nearby unit that erupts after 10 sec, dealing Nature damage split between enemy units while also healing all allies inside. Poisoned units take increased damage and healing. |
| Mephitic Cloud | B | Chance during combat to apply Mephitic Cloud to nearby party members and enemies for 10 sec.Afflicted allies' spells and abilities Poison their target, dealing Nature damage over 5 sec, while afflicted enemies' spells and abilities additionally heal their target. |
| Accursed Poison | B | Chance during combat to inflict Accursed Poison on the strongest enemy, dealing Nature damage every 1 sec for 1 min. The next time the afflicted target would cast an interruptible spell or ability, the Accursed Poison triggers, interrupting it immediately before removing itself. |
| Virulent Mucus | C | Upon entering combat, veil yourself in 5 layers of Virulent Mucus, each stack negating an instance of incoming damage that would exceed 5% of your maximum health.Dealing damage to a Poisoned enemy has a very low chance to grant you 1 additional layer of Mucus. |
| Lithic Plumage | D | Taking damage has a chance to fortify you, reducing incoming damage by 75% up to a cap. The damage cap is increased for each nearby Poisoned enemy. |
These Corrosive Codex Powers even work on the Nemesis Delve, and they can result in a large amount of damage for the fight. If you are looking for more information on the Nemesis Delve Boss for WoW Midnight Season 2, please check out our Azt’arec Nemesis Delve Guide.
Overall, Corrosive Powers are a nice buff for world content and Delves. For more Midnight Guide content, you can find our Midnight Patch 12.1 and Season 2 coverage in our World of Warcraft Guides Hub.
