Warlock Class

(Gain the next level as a sorcery to add its ability.)
At the beginning of your end step, if a creature
died this turn, each opponent loses 1 life.
{1}{b}: Level 2 When this Class becomes level 2,
look at the top three cards of your library.
Put one of them into your hand and the
rest into your graveyard.
{6}{b}: Level 3 At the beginning of your end step,
each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)