Rodravis, Shadow of Jalimir

Companion-Each card in your deck has to have a {b} or a {u} in its mana cost.
Menace, Double Strike
When this creature is targeted of a spell
or ability exile him and exile the top card of
target opponents deck face down.
You may look at and cast cards exiled for as long
as he remains exiled, and you may spend mana as
though it were mana of any type to cast that spell.
Pay 5 life: Put him onto the battlefield from
exile.