Haunt the Network 
Sorcery
Choose target opponent. Create two 1/1 colorless Thopter artifact creature tokens with flying. Then the chosen player loses X life and you gain X life, where X is the number of artifacts you control.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL