For casters and hybrid builds in Diablo IV, resource management is crucial to Diablo 4 Items maintain a steady flow of abilities while avoiding running out of resources during intense combat. Focusing on resource generation, cost reduction, and resource regeneration allows you to sustain your spells and abilities more effectively. Here are some resource management affix combinations to try for casters and hybrid builds:

1. Cooldown Reduction + Resource Generation
Cooldown Reduction: Reduces the cooldown of your abilities, allowing you to use your powerful spells more often.

Resource Generation: Increases the rate at which you generate your main resource (e.g., Mana, Fury, etc.), enabling you to keep casting your abilities without running out of resources.

Why it works: The combination of cooldown reduction and resource generation ensures you can spam your abilities more often while managing your resources effectively. This is especially useful for casters who rely on quick spell casts to stay efficient in battle.

2. Mana Cost Reduction + Increased Mana Pool
Mana Cost Reduction: Reduces the resource cost of your abilities, allowing you to cast spells more efficiently without draining your mana pool too quickly.

Increased Mana Pool: Expands your mana pool, letting you cast more abilities before running out of mana.

Why it works: This combination is perfect for casters who have high mana cost abilities. The mana cost reduction allows you to cast spells more frequently, while increasing your mana pool ensures that you don't run out too quickly, giving you a steady flow of resources.

3. Cooldown Reduction + Mana Regeneration
Cooldown Reduction: Reduces the cooldown of your abilities, letting you use them more often.

Mana Regeneration: Increases the rate at which you regenerate mana, allowing you to cast more spells without worrying about running out of resources.

Why it works: The synergy between cooldown reduction and mana regeneration makes it possible for you to consistently use your abilities in battle, even during longer encounters. You’ll be able to cheap Diablo 4 Items spam spells more freely while your mana recharges faster.