Cobra Commander

Haste
{u/b},{t}: Create a 1/1 blue and black Human
Assassin creature token.
Whenever a creature token you control attacks,
you may pay {u/r}. If you do, you may cast an
instant or sorcery spell from your graveyard.
If a spell cast this way would be put into your
graveyard, exile it instead.
"COOOBRAAAA!!!"