Bioserpent

If you cast this spell in your main phase it costs
{2} less to cast.
Choose target nonland card in your graveyard.
You may put that card into your hand or on top
of your library. Then create a 0/0 green and
blue Ooze Snake creature token and put X
+1/+1 counters on it, where X is the chosen
card's mana value.