Eternal Bargain

Enchantress Rubinia

Breakdown - Enhanced Deck

Battle Surge

Radiant's Revenge

Raven Familiar

Flying
Echo {2}{U} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

FlyingEcho {2}{U} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)When Raven Familiar enters the battlefield, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Flying; echo (During your next upkeep after this permanent comes under your control, pay its casting cost or sacrifice it.)
When Raven Familiar comes into play, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.