Anders, the Bloodstained

Anders, the Bloodstained enters the battlefield
with X legend counters on it.
{t}{w/b}{w/b}{w/b}: Put a legend counter on Anders, the Bloodstained. This creature deals X damage to
target creature or planeswalker, where X is the
number of legend counters on this creature. If a permanent is destroyed this way, exile it.
At the beginning of your upkeep, draw a card for
each permanent in exile. If there are 7 or more permanents in exile, you win the game.