Welcome to our ultimate guide on the Infinite Meteor Sorcerer build for Diablo 4, Season 3's mid to endgame content. We are about to delve into this astral powerhouse as we try and give you an in-depth, concise roadmap that is essential for fully taking advantage of meteors showering down on enemies. 

• The Core of the Build: Starfall Coronet
• Skill Selection and Customization
• Gear Pieces and Their Synergy
• Paragon Board Pathing
• Gameplay Strategy & Build Planner
• Conclusion

↖ The Core of the Build: Starfall Coronet

At the heart of an Infinite Meteor Sorcerer build lies Starfall Coronet; an indispensable item that greatly enhances your meteor skills. This helm doesn't only add ranks to your meteor ability but also introduces a charging system which eliminates mana costs as well as extra meteors. The enchantment effects of this item are what truly set it apart from other builds, doubling the impact of your meteors and turning the battlefield into a burning pyre.

↖ Skill Selection and Customization

Your skillset is imperative to maximizing the potential of this build. Here's a quick run-through:

• Firebolt: A stepping stone for more powerful spells.
• Fireball: Useful in overworld farming and nightmare dungeons.
• Potent Warding: Boosts your resistances.
• Devastation: Increases max mana.
• Elemental Dominance: Raises damage when casting with 50 or more mana.
• Defensive Skills: Frost Nova is omitted in favor of Ice Blades; choose wisely.
• Flame Shield: Healing benefits by upgraded with Shimmering.
• Teleport: Defenses enhanced by Shimmering Teleport.
• Glass Cannon: More vulnerability to damage while dealing more damage.
• Elemental Attunement: There is chance to reset defensive skills
• Ice Armor: Optional mana regeneration
• Conjuration: Precision Magic increases lucky hit chances
• Mana Shield: reduces damage and other barriers that might come up against you
• Mastery Skills: Max out Meteor with Wizardry being important for immobilization effects.

↖ Gear Pieces and Their Synergy

Every gear piece ought to complement the skills that you already possess and enhance meteor efficiency:

• Starfall Coronet: Essential, as said before.
• Remnant: Optional but useful in providing extra damage output.
• Shattered Stars Gloves: Improve meteor damage and bring burning effect.
• Ghost Walkers Boots: Unrivaled movements across opponents.
• Control Ring: Inflicts substantial damage under crowd control conditions.
• Three Curses Amulet: a crucial piece which greatly increases critical strike damage.
• Tal Rasha's Elements Belt: Multi element hits result to enhanced damage output.

↖ Paragon Board Pathing

The Paragon board should support your meteor's destructive abilities:

• Control Node: Increased damage against controlled enemies
• Adept Meteor Node: Necessary for increasing mastery skill
• Reinforced Node: Damage reduction boosted
• Torched Node: Burning damage magnified

↖ Gameplay Strategy & Build Planner

The key to mastering this build is understanding the cooldown mechanics and maximizing damage output between cooldowns. Use firewall to deal constant damage and increase chances of triggering more meteors. Remember, this build shines against large groups of enemies, though boss damage may need further optimizing.

Build planner: http://tinyurl.com/3wpnyz7r

↖ Conclusion

For those who enjoy shattering legions of foes with heavenly power this is an invigorating play style that offers infinite possibilities. With proper gear and skill setup, you will be ready to become a great force in Diablo 4's mid-to-endgame content. As you get new items and improve your strategy do not forget to change your build so as to maximize its efficiency.