Complex sentence: It was there Martel died as King Bradley gruesomely impaled the chimera with his saber, leaving Al horrified that Martel died inside his own body, and he couldn't do anything to prevent it.
Split into simpler sentences: It was there Martel died as King Bradley gruesomely impaled the chimera with his saber. Leaving Al horrified that Martel died inside his own body, and he couldn't do anything to prevent it.