WoWDB

The Corrupted Skullsplitter is a mob you will normally pass on the way to Malkorok’s room.  Instead of killing it, carefully skip it and clear the rest of the trash on the way there.  Once the route is clear, grab the Skullsplitter and pull it into Malk’s room.  Once there, CC it or offtank it to the side, being careful not to kill it.

When the boss casts Breath of Y’Shaarj, make sure the mob is hit by it.  You will know it worked because it will transform into a Corrupted Amalgamation.  As soon as this happens, nuke the mob and then kill the boss as normal.