Huras, Upper Regent

Partner with Sethra, Nether Regent (When this creature enters the battlefield, target player may put Sethra, Nether Regent into their hand from their library, then shuffle.)
Double strike
Flying
Huras, Upper regent's power is equal to 2 + the cards that were put in the graveyard this turn.
{w} tap a creature and Huras, Upper Regent gains haste until the end of turn.