Ancient Skeleton

Menace
Whenever one or more Pirates you control deal
damage to your opponents, exile the top card of
each of those opponents' libraries. You may play
those cards this turn, and you may spend mana
as though it were mana of any color to cast
those spells.
Partner (You can have two commanders if both have partner.)
(Proxy for Breeches, Brazen Plunderer)