"Challenge: The Shattered" is the worst designed daily. Period.
Seriously, Bungie, the combination of random locations and the requirement that players use a rare resource to find them - with no clues to help you find their locations like the Corsair Down missions do - is infuriating. INFURIATING. Really pissed about wasting my entire stack of Tincture of Queensfoil trying to find some randomly placed portal because pissing off players is what Bungie does now, I guess. Whoever thought this was good game design needs to be reprimanded or fired. This daily is a huge waste of time and resources, and anytime anyone needs to stop playing their game to check a website to know what to do is DESIGN FAIL.
For the rest of you poor players, do not pick up this daily. Ever. You will save yourself so much frustration and grief.