Lost Chalice

{p/c}: Exile and attach target creature from play (to this chalice) for 2 endphases, upon creatures return flip a coin for 1 effect
H: Exiled creature gains {t}: Sacrifice this creature, return 1 spell or land from your graveyard to your hand
T: Search your library for a card, add it to your hand
If chalice is destroyed exile all artifacts in play