Skullcrusher is a Limited Unique Rumblehorn dragon of the Tracker Class.
Acquisition
The Skullcrusher can be purchased from the shop for 10,000 
Skullcrusher can occasionally be offered in Card Packs.
To see a list of events Skullcrusher could be found in, please refer to the Event History page. This page is a collection of all known past and current events in the game including Collections, Explorations, Odin's Market, Seasonal Markets, and more.