|PC Only Content|
Information on this page is PC specific.
Similar to the Riddle of the Deep, players must quickly defeat all the enemies before the lava rises across the map while the crystal continues to move higher across the map. The lava kills players, hero defenses and enemies, and will also continue to rise even during the Build Phase.
The crystal begins at the bottom of the map and slowly moves along a path up toward the forge before stopping. It moves faster during combat phases than build phases. The lava will not stop even once the crystal has reached its destination.