1 Abstruse Archaic (CMM) 712
1 Adric, Mathematical Genius (WHO) 33
1 Echoes of Eternity (MH3) 4
1 Lithoform Engine (ZNR) 245
1 Return the Favor (OTJ) 142
1 Strionic Resonator (M14) 224
1 Tawnos, Urza's Apprentice (PLIST) 45
1 Virtue of Knowledge (WOE) 76