Hero Wars: Alliance Adventure: Alliance Adventure Astrid Event Relics Guide

To claim two summoning spheres at the lowest possible resource cost during the Astrid event ("Path of the Legend") in Hero Wars: Alliance Adventure: Alliance Adventure, prioritize low-tier relic upgrades and items near immediate tier thresholds. Spending enhancement materials on cheap upgrades yields event progress far more efficiently than upgrading high-level relics on main heroes.

Step-by-Step Summoning Sphere Upgrade Strategy

To reach the event milestone for two summoning spheres without overspending your reserve materials, follow this action sequence:

Audit Relic Inventory: Check your entire roster for low-level relics or items requiring only a few minor materials to reach their next upgrade threshold.
Calculate Milestone Costs: Target only the minimum number of relic enhancements required to trigger the event milestone that awards the second summoning sphere.
Pace Enhancements Daily: Space out your relic upgrades across the event duration to fulfill daily task objectives rather than spending all resources on day one.
Stop at the Target: Once you unlock the second summoning sphere reward, cease event-driven relic upgrades to preserve your materials for future progression.

Upgrade Efficiency Comparison

The table below contrasts cost-effective event tactics against common resource traps.

Approach	Action	Consequence
Lowest-Cost Progression	Upgrade low-level or near-threshold relics across secondary heroes.	Unlocks both summoning spheres using minimal enhancement materials.
Targeted Thresholding	Stop spending immediately after securing the second summoning sphere milestone.	Preserves enhancement reserves for non-event progression needs.
High-Cost Overinvestment	Upgrade high-tier relics on primary heroes during the event.	Consumes massive material reserves for the same event point output.
Unpaced Spending	Exhaust all upgrade materials on the first day of the event.	Risks missing subsequent daily task rewards over the event window.