Casually looking at the body of the Golem, one wouldn't think it would be able to last against one of Basil's explosive Spells. It was, after all, created from the ruins of the mountain he had destroyed that were barely attached to each other.
It looked like a mere explosion would completely blow it away, breaking all of the bond between the ruins that formed the body. That wouldn't happen however; Charles' Golem was special.
Charles had enough Mana to maintain the strong bond between the ruins forming the Golem for a quite long time. It was, of course, because he had a Dragon Heart.
With a height 70 meters, the Golem was exuding an unimaginable Mana Pressure. It felt nothing like the pressure Charles had exuded previously even though Charles was its core.
Due to his body's inability to contain all of the Mana Bahamut's Heart had, Charles had been purposely wasting a quite huge amount of Mana before.