Hero Academy 10 Retraining: Empires & Puzzles: Match-3 RPG

Hero Academy Level 10 (HA10) in Empires & Puzzles: Match-3 RPG allows you to trade an unwanted, fully unlocked 5-star hero along with food and recruits for an alternative legendary hero every seven days (168 hours). It acts as an automated recycling system rather than a dedicated summon, offering a sustained way to hunt for non-Season 1 heroes and costumes without shrinking your total roster count.

To start a retraining cycle, you must meet four immediate prerequisites:

1. Complete and max the Hero Academy structure to Level 10.
2. Provide one unlocked 5-star hero.
3. Remove that hero from all Raid defense teams, War defense teams, and event lineups.
4. Supply the required bundles of food and recruits to start the seven-day timer.

The system guarantees that you will not receive the exact same base hero you put in for that specific transaction. However, that hero can reappear as an outcome in future weeks.

Retraining Odds and Outcome Pools

Hero Academy Level 10 heavily favors classic Season 1 legendaries. Going several weeks or months receiving base classic heroes is the standard baseline rather than bad luck.

Because the chances for a non-Season 1 hero (5%) or a costume (5%) are low, treat HA10 as a background system. Keeping the queue running continuously without letting the timer sit empty maximizes your chances over the course of the year.

Hero Selection Rules: What to Feed and What to Keep

Strict roster management prevents the accidental loss of valuable heroes that cannot be easily replaced.

• Feed unlevelled Season 1 duplicates: Keep your input pool limited to extra copies of classic heroes sitting at Tier 1, Level 1 (such as secondary copies of Lianna, Thorne, or Justice).
• Never feed unique legendary heroes: Even if an older 5-star hero seems underpowered in the current metagame, balance updates, costumes, and specialized events can restore their relevance.
• Never feed ascended heroes: Hero Academy 10 does not refund any ascension materials. Any Mystic Rings, Poison Darts, Telescopes, or Damascus Blades previously spent on a hero are permanently lost upon retraining.

Resource Banking to Avoid Facility Downtime

Because retraining runs on a strict 168-hour countdown, you must have the necessary food and recruits available the moment the current cycle finishes. If your storage caps are reached or your resources are tied up in leveling heroes and troops, HA10 will sit dormant.

• Bank recruits in Training Camps: Store spare recruits in Training Camp 11 (Extra Low Cost) or Training Camp 20 (Legendary Training). When retraining finishes, cancel queued units to instantly free up the recruits needed for the next run.
• Store food off the field: Buffer excess food in Training Camp 20 or high-tier Alchemy Lab recipes. This keeps food safe from Raid losses and provides immediate reserves to cover the multi-million food cost.
• Set a reminder for collection: HA10 finishes at the exact minute it was started seven days prior. Collect and re-queue immediately to maintain a seamless loop.

Retraining Versus Soul Exchange

The Soul Exchange event requires 10, 15, or 20 unlocked 5-star heroes to claim a specific, guaranteed top-tier hero from a curated selection. Retraining, by contrast, recycles one card at a time with random results.

If you have fewer than 20 duplicate legendaries, feeding one duplicate through HA10 every week does not reduce your total stock. When retraining delivers an unwanted classic hero, that card simply serves as the input for the next seven-day cycle. This maintains your total duplicate count for future Soul Exchange thresholds while giving you 52 random chances each year to pull rare costumes and past event heroes.