2 Chancellor of the Spires (NPH) 31
4 Coastal Tower (8ED) 323
2 Island (TLA) 283
1 Phyrexian Tower (MH3) 303
1 Reliquary Tower (M19) 254
4 Rupture Spire (M19) 255
2 Spire Monitor (NPH) 46
4 Spire Owl (UZ) 98
1 Spire Serpent (MBS) 32
4 Tower Drake (RTR) 55
3 Tower Geist (ORI) 80
4 Tower of Calamities (SOM) 212
4 Tower of Champions (MRD) 265
4 Tower of Eons (MRD) 266
4 Tower of Fortunes (MRD) 267
4 Tower of Murmurs (MRD) 268
4 Urza's Mine (9ED) 327
4 Urza's Power Plant (9ED) 328
4 Urza's Tower (9ED) 329