the 2.4 change to warlock summon is a gateway to new and fantastic exploits
Everyone needs to be looking into this and create their own
Warlocks can now summon people to your party even if they are not in an instance
Get a Lock and rogue, about 20 invis pots, make your way through the trash timing invisibility for the lock.. get to a safe spot infront of boss summon everyone fight loot enjoy