{B}: Evolved Sleeper becomes a Human Cleric with base power and toughness 2 2.
{1}{B}: If Evolved Sleeper is a Cleric, put a deathtouch counter on it and it becomes a Phyrexian Human Cleric with base power and toughness 3 3.
{1}{B}{B}: If Evolved Sleeper is a Phyrexian, put a +1 +1 counter on it, then you draw a card and you lose 1 life.