Endgame content in PoE 3.26 demands both power and durability, and the Starcaller Axe build can be fine-tuned to excel in this stage. Whether you’re tackling high-tier maps, delving deep underground, or engaging with PoE 1 Currency pinnacle bosses, this build adapts well to the challenges of late-game content.

The first step in preparing for endgame is ensuring your gear reaches optimal levels. Aim for a Starcaller Axe with high rolls on elemental damage and crit. Complement it with armor that has maximum life and strong resistances. Endgame content often punishes weak defenses, so survivability should never be neglected.

Ascendancy choice is crucial. Champion’s fortify and aura boosts provide excellent defensive stability, which is especially useful in delve and high-mod maps. Slayer’s sustain also remains strong, but endgame often favors layered defenses, making Champion slightly more reliable for survival.

Skill gem adjustments help deal with tougher enemies. Cyclone remains effective but should be paired with stronger single-target supports like Concentrated Effect and Increased Critical Damage. Adding utility skills such as Enduring Cry provides endurance charges that further reduce damage taken.

Flask setups should be upgraded to higher tiers. Unique flasks like Bottled Faith or Wise Oak can add significant boosts to both damage and defense in endgame encounters. Proper flask timing ensures survival against bosses with devastating mechanics.

The passive tree should expand toward powerful clusters. Large cluster jewels with elemental damage or critical strike bonuses enhance scaling, while medium clusters offering attack speed and leech make the Poe 1 Divine Orb build more sustainable. Small jewels with added resistances or life round out defenses.

Playstyle adaptation is vital. Endgame content often introduces mechanics that punish standing still. Using Leap Slam for mobility while weaving in Cyclone ensures you remain mobile and safe. Recognizing boss patterns and map hazards is as important as raw stats.

In conclusion, the Starcaller Axe build can thrive in all aspects of endgame when properly optimized. With the right mix of gear, skills, and strategic adjustments, it becomes a versatile powerhouse capable of tackling the most challenging content in PoE 3.26.