Precons with Aetherflux Conduit

Aetherflux Conduit

Artifact

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

As Kaladesh became Avishkar, aether finally started flowing freely to all.