International Space Station

Other players may contribute mana to cast
International Space Station. All players that do
not contribute must play with their hands
revealed for as long as I.S.S. is on the
battlefield. Each player that spent mana to cast
this draws cards equal to the mana spent.
When I.S.S. enters the battlefield,
sacrifice it unless there are no other cards
named I.S.S. on the battlefield.