Mana Leak

[Coffee Vampire]

Could one {Reverberate} a {Mana Leak} and Mana Leak the Mana Leak?

Also, if you use {Mana Leak} on a spell and your opponent pays the 3 mana, can you target the same spell again with another Mana Leak?

[Poof]

Yes and yes

[BlackJester]

Yes times two.