How do we sustain Spirit?
Our main Spirit engine revolves around 
Tibault's Will 
Malefic Crescent, and 
Blood Howl.
Malefic Crescent automatically casts Blood Howl every 4 seconds. Thanks to 
Spirit Howl Blood Howl, Blood Howl converts its healing into Spirit, while Tibault's Will restores additional Spirit whenever Blood Howl grants Unstoppable.
The second part of our Spirit generation comes from 
Lust for Carnage, which restores Spirit whenever we land a Critical Strike. This makes Critical Strike Chance one of the most important stats on your gear.
Finally, 
Dirge of Airidah provides another strong source of Spirit generation, making it one of our best-in-slot rings for the build
The 2-piece 
Berú of the Storm Shepherd bonus is one of the biggest power spikes for this build, granting 60% increased damage. However, to fully benefit from it, you need to consistently spend at least 120 Spirit. That's why Spirit generation is one of the build's highest priorities and should be established before transitioning into this setup
When should I transition from the Starter version?
Transition once you have the core items that enable the build's mechanics:
- Malefic Crescent lets you remove Blood Howl from your skill bar by automatically casting it every 4 seconds, freeing up a slot for
Debilitating Roar 
Ifeh's Dire Totem enables 
Grizzly Rage as your main Ultimate, replacing 
Cataclysm for both farming and pushing.- Aim for at least 2 pieces of the Storm Shepherd set before switching. The 2-piece bonus is a massive damage increase and provides the Spirit sustain needed to keep the build running smoothly. This is also the point where I recommend switching to
Hero of the Storm Lightning Storm and 
Derecho Hurricane, since you'll have enough Spirit generation to keep Hero of Lightning Storm active permanently - While progressing,
Aspect of Disobedience becomes much stronger once you unlock the Constricting Tendrils Legendary Node. Before then, any defensive Aspect that provides Damage Reduction is a solid alternative. - For farming, save Grizzly Rage for Elite packs or dangerous situations. Against bosses, however, you should use it on cooldown for the extra damage
Farming Locations
Leoric's Crown → General Unique / Legacy pool (Uber bosses and high-end content)
Dark Howl → Urivar
Tibault's Will → General Unique Pool (any Lair Boss, or craft via Horadric Cube on pants)
Waxing Gibbous → Lord Zir
Malefic Crescent → The Beast in the Ice
Dirge of Airidah → Astaroth
Ifeh's Dire Totem → Harbinger of Hatred
Thundergod's Blessing → General Unique Pool
Survivability Tips
Shred's biggest weakness is its survivability, but with the right setup you can comfortably farm Torment XII.
Gear Priorities
- Temper Maximum Life on your Helmet, Chest, and Pants.
- Aim for 30,000–35,000 Maximum Life.
- Prioritize Resistance to All Elements on your defensive gear, including your boots. Capped Resistances are more valuable than stacking additional Armor.
Defensive Aspects
- Aspect of Debilitating Toxins is your most important defensive Aspect, providing 30% Damage Reduction while causing enemies to deal 15% less damage.
- The 3-piece Storm Shepherd bonus provides additional Damage Reduction.
Great Storm Aspect grants another 15% Damage Reduction and is the recommended Aspect for your boots once Overcharged Aspect has been moved to your amulet.
Additional Survivability
If you're still struggling, consider replacing Tibault's Will with Embattled Aspect. You'll lose some damage and Spirit Generation, but your Fortify generation becomes much stronger, making Torment XII farming significantly safer.
Finally, make sure you're using the 
Poc + 
Que Rune combination. It automatically activates Earthen Bulwark during combat, providing almost permanent Fortify and Barrier, making it one of the strongest defensive layers available for this build
Mythic Item Priorities
1. Waxing Gibbous
This should always be your first priority. It directly increases Shred's base damage, making it the most consistent damage upgrade in the build. Since it's your main weapon, the increased Weapon Damage also provides a significant overall DPS increase.
2. Ifeh's Dire Totem
Your second priority. Besides enabling Grizzly Rage to work with 
Shred, it also provides a massive Critical Strike Damage Multiplier. Keep in mind that this item scales with Critical Strike Chance, so it becomes much stronger once you reach around 70%+ Critical Strike Chance.
3. Dirge of Airidah
One of the strongest Mythic upgrades available. In its Mythic form, it grants up to 92%[x] increased damage against Vulnerable enemies hit by your Storm Skills. It also comes with excellent default affixes such as Willpower and Vulnerable Damage Multiplier, making it one of the easiest items to scale.
4. Dark Howl
Dark Howl is an excellent endgame upgrade, providing up to 104%[x] increased damage in its Mythic version. It also comes with Maximum Critical Strike Chance by default, helping you reach a much more consistent Critical Strike Chance for endgame content.
5. Malefic Crescent / Tibault's Will
Either item is a good choice. Personally, I recommend Malefic Crescent first for the additional damage. Both items are core to the build's Spirit Generation and are required for the final setup, although they provide a smaller power spike than the previous upgrades.
Druid
Storm Shred Shred is the core skill of this build. It will be our main source of damage, allowing us to tear through the monsters of Sanctuary with ease.
Cornered Beast Grizzly Rage, 
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