Gerrymandering
{2}{G}
Sorcery
Exile all lands. Give each player a number of those cards chosen at random equal to the number of those cards the player controlled. Each player returns those cards to the battlefield under their control.
Realm Razer
{3}{R}{G}{W}
Creature -- Beast
4/2
When ~this~ enters, exile all lands.
When ~this~ leaves the battlefield, return the exiled cards to the battlefield tapped under their owners' control.