9 cards where the set is “one” and the card types include “sphere”

Mirrex (Phyrexia: All Will Be One #254)
The Autonomous Furnace (Phyrexia: All Will Be One #247)
The Dross Pits (Phyrexia: All Will Be One #251)
The Fair Basilica (Phyrexia: All Will Be One #252)
The Hunter Maze (Phyrexia: All Will Be One #253)
The Monumental Facade (Phyrexia: All Will Be One #255)
The Mycosynth Gardens (Phyrexia: All Will Be One #256)
The Seedcore (Phyrexia: All Will Be One #259)
The Surgical Bay (Phyrexia: All Will Be One #260)

This search is finished. Now the real work can begin.