Owen Bertram was no longer in that Great Tomb.
When the Spiritual Treasure Embryo flew out from the Seventh Level, Owen Bertram kept praising it. When five powerful auras appeared in the Extinction Domain, he withdrew Lord through the air and only had time to explain to Rachel, "Stay where you are," before turning into a gust of wind and rushing out of the Great Tomb.
Owen Bertram went to the small lake that Magpie had discovered. Indeed, the lake water was boiling, and a momentum was constantly bouncing at the bottom of the lake but couldn't erupt because of the missing link of the Bone Beast.
Some chaotic illusions floated in the lake water - similar to the illusions in those five giant Light Pillars.
Owen Bertram rushed towards the lake water but bounced back by a powerful force. After turning a few somersaults in the air, he smashed into a hillside, stabilized his figure, then called Magpie over quickly with gritted teeth.