Destiny // Beltrik, the Veiled Location
One of the Ember Caves (Venus) spawn locations for Beltrik, and the Ether chest drop. When you are in the right planet and location, wait for the prompt on the bottom left ("A pack of Wolves is prowling") to appear, then keep an eye out for a Fallen drop ship holding a group of fallen enemies. More waves should spawn after beating the first wave, and the final wave will drop the target.