Xaskar, Titan of Fate's Fury

When Xaskar enters the battlefield, sacrifice it
unless it escaped.
Whenever Xaskar enters the battlefield or attacks,
scry 3, then each opponent discards 2 cards and
exiles the top 3 cards of their library. You may
cast those cards without paying their mana costs.
Escape—{u}{u}{b}{b}, Exile five other cards from
your graveyard.