Rumble

 is a rare level 64 wand, sold by the Galleon's Graveyard Dungeon Merchant. It can be found outside Galleon's Graveyard, a dangerous Dungeon in the Ocean, close to Pirate Cove.

Being an entirely thunder focused item, Rumble has a small amount of life steal allowing the user to stay alive that tiny bit longer while flailing their wand about.

Obtaining
Rumble can be bought from the Galleon's Graveyard Dungeon Merchant for 4 Redbeard's Hair.