Sostrate
CommonBonus
Fortresses build 20% faster
Advisor Information
| Name | Sostrate |
| Rarity | Common |
| Age Requirement | Age III (3) |
| Database ID | Sostrate_C_III |
Strategic Use
Sostrate's effect — fortresses build 20% faster — is the kind of bonus that rewards players who plan their build order around a single throughput vector rather than spreading attention thin.
Timing matters more than raw stat: this advisor activates the moment you reach Age III, so synchronize your advancement with your peak production window.
Players coming back to Age of Empires Online will find Sostrate still relevant in current meta builds, especially those leaning into the construction archetype.
When Age III Matters
Age III is the mid-game wedge: you either secure map control here or lose the game by attrition. Advisor choice at this tier directly influences that outcome.
Multi-civilization Heritage
Sostrate carries a Multi-civilization naming convention — mixed historical tradition spanning multiple cultures. While advisors are not strictly civilization-locked in gameplay, the lore tie shapes the flavor.
How to Obtain Sostrate
Sostrate is a foundational tier-1 advisor, awarded through basic empire quests, low-cost store purchases, or starter rewards. Accessible from the earliest hours.
Recommended Companions
Within the construction archetype, several advisors layer cleanly with Sostrate. Players running a focused construction build often rotate one of these as a second slot:
- Stephanos (Common, Age III) — Town Centers, Guard Towers, and Fortresses cost 15% less Stone
- Tycho (Epic, Age IV) — Wonders build 50% faster
- Bolgios (Uncommon, Age III) — Fortresses cost 9% less
Comparable Common Options
If you want Common-tier alternatives that take your build in a different direction than Sostrate, these advisors offer distinct strategic angles: