The Lands of Incarus were created using four of six elemental stones. (Not the infinity stones, dumbies.)

The four stones created the lands of Ice, Earth, Desert, and Jungle. Later on when a corrupted mage broke free of his chains, Flame was created. The Evil Lands of the Corrupt houses the evil mage, the sister tower was destroyed in the great war of Lasroth in a last ditch effort for the Corrupt mage to be killed.