Electrosiphon 
Instant
Counter target spell. You get an amount of 
(energy counters) equal to its mana value.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Counter target spell. You get an amount of (energy counters) equal to its mana value.