The Elderdrazi

Can't be countered.
The Elderdrazi enters the battlefield tapped.
Vigilance, Shroud
As an additional cost to cast The elderdrazi,
sacrefice any number of permanents.
Whenever The Elderdrazi enters the battlefield
or attacks draw X cards where X is the number
of permanents you sacreficed this turn.
{w}{u}{b}{r}{g},{t}: you may cast target card with
devoid from your graveyard without
paying its mana cost.