Board Thread:Episodic and Issue Discussion/@comment-47881-20131118225102/@comment-5188108-20131125141718

You have to lure him into Klarion's meteor attacks (they're telegraphed by red rings on the ground). They knock him to the ground for a bit where you can damage him. Basically the same as the Bane fight, but more dangerous since you want to avoid Klarion's attack while drawing Blockbuster in.