Breed Bisonorus with another compatible monster during the breeding event or on a breeding island that allows Epic monsters
Use the exact Epic Bisonorus breeding combination if the current event specifies one
Check the in-game breeding hints or official event notes for the current required parents
Place the required parent monsters in the Breeding Structure
Wait for the breeding time to complete
If the result is not Epic Bisonorus, try again during the active Epic Bisonorus availability window
Make sure both parent monsters are fully available and not blocked by level, element, or island restrictions
Use torches, bonuses, or other breeding boosts if available to improve your chances
Confirm you are breeding on the correct island or structure for Epic Bisonorus
Repeat breeding attempts until Epic Bisonorus is obtained