Knowledge Vault
{4}
Artifact
{2}, {T}: Exile the top card of your library face down.
{0}: Sacrifice ~this~. If you do, discard your hand, then put all cards exiled with ~this~ into their owner's hand.
When ~this~ leaves the battlefield, put all cards exiled with it into their owner's graveyard.
Kyren Archive
{3}
Artifact
At the beginning of your upkeep, you may exile the top card of your library face down.
{5}, Discard your hand, Sacrifice ~this~: Put all cards exiled with ~this~ into their owner's hand.