An Ether Cube as it appears during a Challenge Battle.
Ether Cubes are items and battle mechanics in Xenoblade Chronicles 2. They are dropped by enemies during Challenge Battles when they are killed or in a combo, appear as orange cubes on the ground, and disappear after a short time. An Ether Cube dropped by an enemy may represent multiple, showing a cube symbol and the number of cubes received upon picking it up. Challenge Battles are available as downloadable content from the Challenge Battle Mode Pack of the Expansion Pass. They are used to measure success in a Challenge Battle. The more Ether Cubes the player picks up during the Challenge, the more rewards will be given upon completion.