Azelf, Being of Willpower

Flying
Each player skip his draw step; instead, he exiles
a number he chooses from 0 to 4 of cards from
the top of his library. He may plays those cards
until the end of turn. At the end of each turn, the active players loses X life Y times, where X is the
number chosen and Y the number of cards exiled
with this effect that has been played.