Ignorant Bliss - mtg.wtf

Instant

Exile all cards from your hand face down. At the beginning of the next end step, return those cards to your hand, then draw a card.

"A quick step beyond oblivion lies a place so full of thoughts that it leaves no room for your own."
—Quyzl, chronarch prodigy

2006-05-01 If the delayed triggered ability is countered (for example, with Voidslime), the cards remain exiled forever.
2006-05-01 If you cast this during the End step, you won't return the cards to your hand or draw a card until the next turn's End step.
2006-05-01 No player may look at the cards while they're face down.

Card is in preconstructed decks:

mtg.wtf