Valek, the Merciless

Deathtouch, Menace
Valek, the Merciless costs {1} less to cast for each creature that died this turn.
When Valek, the Merciless enters the battlefield,
if more than {b}{b}{b} was spent to cast it, search
your library for a creature card and put it into
your hand. If {b}{b}{b} was spent to cast it, put the
card onto the battlefield instead.