3. Tier Scaling for the Exarch’s Influence
The Searing Exarch Influence works in conjunction with map tiers. As you complete higher-tier maps (T14+), the difficulty of the Searing Exarch’s influence increases. This means:

Higher-tier maps under the Exarch’s influence will feature harder enemies and more complex mechanics.
If you want to face an even greater challenge, you can use modifiers to Path of exile currency increase the map's tier, making the Searing Exarch fight more intense and rewarding.
The rewards also scale with the tier. Completing higher-tier maps with the Searing Exarch's influence results in greater loot drops, including more valuable items, more rare currency, and higher chances for special loot such as Exarch-related items or Exarch-themed gear.

4. The Searing Exarch's Unique Rewards
In addition to increasing the challenge, the Searing Exarch’s Influence provides greater rewards for players who succeed. The rewards for completing influenced maps and boss encounters include:

Exarch-specific loot: Special Exarch-themed items may drop, providing players with powerful gear, unique items, and rare currency drops that are tied to the influence of the Exarch.

Voidstones: Each time you defeat the Searing Exarch, you earn the Omniscient Voidstone, which grants you access to higher-tier maps and a greater range of influence. The Voidstones are crucial for advancing in the Atlas and reaching endgame content.

Increased Drops: The more you engage with the Searing Exarch’s influence, the more rewarding your maps become. Not only will the loot be better, but the chance for high-level crafting materials and currency is increased. You'll also gain access to better crafting options through the Exarch crafting system, which allows for POE currency more targeted affix rolls and item enhancements.