WHERE & HOW TO FARM Where to farm Catalyst Exchange: Epic; Unrecorded History AP Exchange; item-specific episode AP Exchange stages.
Epic catalysts are often the gating material for a substantial awakening or skill upgrade. Because their stage sources can be episode-specific, check the exact item entry before committing to a route. Use the exchange when it offers the needed catalyst; do not assume an unrelated stage or chest covers it.
Before you go Unlock the relevant episode and AP Exchange, or hold an epic catalyst selection chest. Identify the exact epic catalyst and quantity needed for an intended hero upgrade. Check the catalyst's current listed source before choosing a stage. Have Energy and AP available for repeat clears and exchange purchases. Open the hero upgrade screen and note the epic catalyst name and required quantity. Look up the catalyst's listed sources and identify whether Unrecorded History offers it. If it does, open a listed UH stage and confirm the exchange stock before spending Energy. If the item is tied to a later episode exchange, verify that episode and stage are accessible to your account. Clear the selected stage to earn AP, then purchase the catalyst through its exchange. For a selection chest, choose the exact item only after comparing it with the AP route and other current needs. Apply the catalyst to the intended upgrade and repeat the stage route if more are needed. Farming tips Epic catalyst sources vary; verify the particular item rather than relying on a general episode rule. A chest saves farming time but is limited, so reserve it for a real upgrade bottleneck. Repeat, collect and use AP stage clears and exchange purchases can be repeated while the exchange remains available. A selection chest provides a limited one-time selection.
Common mistakes Assuming every epic catalyst is available in UH: check its individual source entry. Farming an inaccessible or wrong episode: confirm the stage is open to your account before spending resources. Using a selection chest for a catalyst already easily covered by AP: compare routes before choosing. When to stop or switch Stop when the planned hero has enough catalysts; return to Hunt or choose the next explicit upgrade material need.
Sources & fact checks REWARD DETAILS & CONDITIONS Sources & rewards All source types Farming route Farming priority Name A–Z Drop chance
Farming route Catalyst Exchange: Epic; Unrecorded History AP Exchange; item-specific episode AP Exchange stages.
Unlock the relevant episode and AP Exchange, or hold an epic catalyst selection chest. Identify the exact epic catalyst and quantity needed for an intended hero upgrade. Check the catalyst's current listed source before choosing a stage. Have Energy and AP available for repeat clears and exchange purchases. Rate not listed
Related guides More guides for gathering materials and making progress.
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Find another guide Keep making progress in Epic Seven.
