Raviel, Lightning of Shadows

Haste, First strike, Deathtouch
When Raviel, Lightning of Shadows enters the
battlefield, it deals damage to any target equals
to it's power and you add {u} or {b}.
{1}{u}: Exile Raviel, Lightning of Shadows.
Return it to the battlefield at the beginning of the
next end step.
"Our life is made by the death of others."