If you want to know how to beat heroic Karazhan prologue Malchezaar this video guide by Asmodeus takes you through the level step-by-step in this video.
He does a great job of talking you through his strategy. What to look out for, and how to complete this heroic boss yourself.
Heroic levels are super-hard, so it’s really satisfying to complete them. You get a card back for your effort, plus you’ll have some fun. So why not test yourself and give it a go.