Match 4 Gems in a row to create Severing Surge. This is very helpful to clear obstacles on the gameboard!
Swap it with any Gem or double-tap the Severing Surge to clear a path!
Note: If you have matched 4 stones horizontally, Severing Surge will be in VERTICAL position and will clear the entire row in that direction. Likewise, if you have matched 4 stones vertically, Severing Surge will be in HORIZONTAL position and will clear the entire column vertically.