Safe Haven is a special Land card from Time Spiral Timeshifted (TSB), collector number 121. Current market price: $0.49 (foil $8.77), TCGplayer market prices via Scryfall.
{2}, {T}: Exile target creature you control. At the beginning of your upkeep, you may sacrifice this land. If you do, return each card exiled with this land to the battlefield under its owner's control.