Moving Tunnels/ Buried City

(You may play this card as either cost, creating
that affect. You may unlock the other side for
it's cost at any time.)

Moving Tunnels {1}{u}{u} - When you open this door, tap target land and target non-land permanent. Manifest Dread.
———{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}
Buried City {2}{b} - Exile target creature card from a graveyard. You may return it to the battlefield under it's owners control.