MH1: Wrenn and Six (Foil) Root Cities in Ruin brings four

Cities in Ruin brings four new investigators

When Delusions of Mediocrity enters

As the name suggests

you can "off-load" On your neighbors some unwelcome materials

And the alternate win condition of knocking off 3 of your opponent's ornaments creates new strategic problems to solve

MH1: Wrenn and Six (Foil) Root Cities in Ruin brings four+1: Return up to one target land card from your graveyard to your hand. 1: Wrenn and Six deals 1 damage to any target. 7: You get an emblem with "Instant and sorcery cards in your graveyard have retrace." (You may cast instant and sorcery cards from your graveyard by discarding a land card in addition to paying their other costs.)