Chapter 817: Archangel Tyrael (Three in One)

While Abel moved for a final hit, a dark flame appeared all over Duriel's body. Upon a closer look, it wasn't actually flame, but a vision of countless souls screaming and tumbling over one another in agony. Their screams were what supplied energy to it. 

Duriel stared at Abel with its lifeless eyes. It tried to withstand the stinging sensation from getting zapped, and suddenly, one black flame erupted and exploded. It started screaming louder than ever before. The entire tomb shook. If Abel could describe this, it felt like his entire existence was being rejected by this room. He tried to produce another "lightning" spell, but the spell runes disappeared before they were even activated.