Gates of Ulduar

Gates of Ulduar enters the battlefield tapped.
{t}: Add {w}{w} to your mana pool.
{w}{w},{t}: Scry 2, then reveal the top card of your library. If it's an artifact card, you may put it
onto the battlefield. If it's not, draw a card.
Beneath ancient Ulduar, the Old God of death lies, whispering...