Memory Jar

{T}, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.

Vintage Masters

{T}, Sacrifice Memory Jar: Each player exiles all cards from his or her hand face down and draws seven cards. At the beginning of the next end step, each player discards his or her hand and returns to his or her hand each card he or she exiled this way.

From the Vault: Relics

Urza's Legacy

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T, Sacrifice Memory Jar: Each player sets aside his or her hand, face down, and draws seven cards. At end of turn, each player discards his or her hand and returns to his or her hand each card he or she set aside this way.

You can’t look at the cards you exiled until they return to your hand.