Because the Lucky Rocket Cluster gives its benefit to all nearby when it is launched, the Cluster Launcher item can be handy for placing a Cluster Launcher object just outside of an instance to buff a raid prior to entering the instance.
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Because the {{item|Lucky Rocket Cluster}} gives its benefit to all nearby when it is launched, the Cluster Launcher item can be handy for placing a Cluster Launcher object just outside of an instance to buff a raid prior to entering the instance.
A Rocket Cluster Firework must be used near a Cluster Launcher. Conceptually, the Firework is thrown into the Cluster Launcher, but there is no targeting involved, just right click on the Rocket Cluster in your inventory. (A Cluster Launcher is "used" in the same sense that an Anvil is "used" in WoW.)
The Cluster Launcheritem is used to spawn a Cluster Launcher object on the ground. These can be used anywhere "outdoors" (i.e. not in buildings), including some outdoor encounters in instances such as Supremus in the Black Temple. The Cluster Launcher object lasts for 30 minutes.
Because the [Lucky Rocket Cluster] gives its benefit to all nearby when it is launched, the Cluster Launcher item can be handy for placing a Cluster Launcher object just outside of an instance to buff a raid prior to entering the instance.