b: evolved sleeper becomes a human cleric with base power and toughness 2/2.
1b: 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.
1bb: if evolved sleeper is a phyrexian, put a +1/+1 counter on it, then you draw a card and you lose 1 life.
