If the epic equipment fails to strengthen, it will explode and the player will get a soul of the universe.
Extended data:
In the game between Dungeon and Warriors, there are enhancements: enhancements can improve the fixed attribute value of equipment, weapons are physical magic attacks that ignore the defense of the other side, armor increases physical defense, and jewelry increases magic defense.
In the game, the fixed attribute value of equipment can be improved by strengthening. Weapons are physical magic attacks that ignore the opponent's defense, armor increases physical defense, and jewelry increases magic defense. Strengthening requires materials [hearthstone carbon] and game coins. Different colors and grades of equipment require different materials and game coins, and the enhanced attributes are also different.
In DNF, there is no capping limit for equipment enhancement, but there is a success rate. Equipment that fails to strengthen above+10 will be decomposed. But for the equipment above+10, the improved attribute is equivalent to 70% of the previous level, which is quite impressive.
References:
DNF official website: Equipment Strengthening