Vin, Lady Heir

Partner with Elend, King of Luthadel (When this creature enters the battlefield, target player may put
Elend into their hand from their library, then shuffle.)
Flying, Menace.
At the beginning of your upkeep, you create a Treasure Token.
{1}{u}, Sacrifice a Treasure Token: Draw a card.
{2}{b}, Sacrifice a Treasure Token: Vin, Lady Heir
gains indestructible until end of turn.