It gives all your creatures ward 3, which is pretty amazing, and it also turns one creature into a 7/7 and another into a 1/1 whenever it attacks
The simplest answer is graveyard hate, with cards like Leyline of the Void, Rest in Peace, and Relic of Progenitus being among the best in the format at fighting Dredge and Surgical Extraction also offering a decent amount of value if you can get the timing right (exiling Narcomoeba or Bloodghast makes it hard for Prized Amalgam to return to the battlefield, while getting rid of Creeping Chill with the "exile" trigger on the stack will fizzle the damage)
While it does change the power and toughness to 1 for the creature you target, you might not be going to win through combat damage anyway depending on your build
So many uncommons have huge payoffs for their respected guild, and I feel somewhat guilty for only cutting only a few cards and making such long lists
Shards of Alara , the first set in the block, was fundamentally about five shards, that is, five parts of the plane that broke away from the rest
Nadu, Winged Wisdom is banned in Modern and Commander, the two formats it was conceivably designed for, and a number of other formats as well