Aetherflux Conduit 17 (Commander: Aetherdrift)

Whenever you cast a spell, you get an amount of {E} (energy counters) equal to the amount of mana spent to cast that spell. {T}, Pay fifty {E}: Draw seven cards. You may cast any number of spells from your hand without paying their mana costs.

NM - $1.50
LP - $1.50
MP - $1.50
HP - $1.50
DMG - $1.50